Mar 29, 2012 · This is my first month using OPK's and I am CD20 or 21 and still no positive. I do tend to have longer cycles usually around 33 days sometimes more and a few times less so I am wondering if that it why. My tests have got a little darker but still nowhere near the control line. I do a test in the afternoon and lately I have been doing one in the ... The month I conceived, I had a negative OPK 2 days before my ovulation, which was detected with my bbt. Good thing we had sex during that time or I would’ve completely missed it. LikeIs Your BBT More Accurate Than An OPK? Experts Weigh In Life Manuel Findeis/Fotolia Checking Your BBT Versus Using An OPK — Which Is More Accurate? by Caroline Shannon-Karasik Oct. 14, 2017...I am using cheap OPK strips and Ovia. Ovia became much more accurate after the OPK's because I don't ovulate until day 19-20 (of a 32-34 day cycle). I don't think I'll temp because I'm one of those people who will obsess over it (same reason I can't count calories because it'd go downhill quickly).The OPK method is even more powerful when combined with the basal body temperature (BBT) method because the two methods together create an “ovulation sandwich.” (Check out my post on the BBT method for details on how to incorporate it into your ovulation tracking activities.) Since the OPK method gives you about 1-2 days’ notice prior to ...Hiya, so I’m 7/8 dpo today… had positive opk on 17th and I had ovulation pain the same day so That’s why I say 7/8 dpo opk was negative the next day. I don’t check BBT but my Fitbit app shows a temp dip on 17th and then rise too. This month...My bbt dropped this morning and Iv had ovulation pains all day, so that would predict that Iv ovulated today- as long as I have a temp rise tomorrow which I’m expecting going by last months chart. But on my clearblue opk Iv got flashing smiley no static yet. If it goes static tomorrow that will say ovulation within 24-48 hours.If you have fertile cervical mucus but no rise in temperature, it could be that you're not ovulating. While fertile quality cervical mucus can warn you that ovulation is coming, so you can time sex for pregnancy, it doesn't confirm that ovulation actually took place. You can have fertile quality cervical mucus, but not ovulate.If your OPK is positive but your temperature never spikes, it could be a one-time fluke. But if it continues to happen pretty regularly and you're sure you've dotted your Is and crossed your Ts ...Ovulation predictor kit (OPK) Ovulation predictor kits look just like the home pregnancy tests but they determine when you are ovulating instead. Unfortunately, different brands vary in their accuracy. If you are finding positive tests with the regular "pee-on-the-stick" kind, then you don't really need the fertility monitor.Bbt Spike But No Peak Fertility On Opk. K. Karter2013. Mar 23, 2015 at 10:39 AM. I have been TTC since December and still no luck. I started temping this cycle and got a big temp spike this morning. I am using clearblue advanced opk's and I have only gotten two flashing faces which means high fertility, but I haven't gotten a peak fertility yet.I am using cheap OPK strips and Ovia. Ovia became much more accurate after the OPK's because I don't ovulate until day 19-20 (of a 32-34 day cycle). I don't think I'll temp because I'm one of those people who will obsess over it (same reason I can't count calories because it'd go downhill quickly). Ovulation tests are easy to use. Ovulation kits work similarly to home pregnancy tests—you simply pee on the test stick, activating a chemical that can detect your LH surge. Many OPKs come as a ...Is Your BBT More Accurate Than An OPK? Experts Weigh In Life Manuel Findeis/Fotolia Checking Your BBT Versus Using An OPK — Which Is More Accurate? by Caroline Shannon-Karasik Oct. 14, 2017...Apr 21, 2023 · A BBT spike (or progesterone testing) will show that ovulation did actually happen. So it's possible that while you're getting a positive OPK, you may not actually be ovulating when you think you are. If you do eventually get a BBT increase, it could mean that your body is trying again and successfully ovulating the 2nd time. Jan 2, 2014 · You don't O on the day of a positive opk. It's 12-36 hours after the positive opk, so that's the reason for the low temps for now. Sometimes you can get a positive opk and not O. What is the difference between BBT and ovulation predictor kits (OPK)? An ovulation predictor kit measures LH levels, which surge before ovulation. Therefore, OPKs can detect your fertile window in advance, before ovulating. Ideally, we should start having sex before the surge, and when the test becomes positive, we can increase the frequency.Therefore, BBT and OPK combined will let you know if you are really O'ing. If you are still in doubt then you should have your doc test and see if you are or not. I have cysts and was not O'ing at ...I was diagnosed with endometriosis and pcos. I started metformin last month, used provera to kick in my period then letrozole on cd 3-7. FF had marked cd 10 as my ovulation but that is way too early for me. My typical cycle is more or less 45 days and I ovulate somewhere from cd 25 onwards. But my BBT have been up.Jan 18, 2010 · After Fallopian Tube Surgery: TTC, OPK, BBT I refused at first to get into the rigors of what I called “Die hard trying to conceive ( TTC) “. I refused to use ovulation predictor test kits (OPKs), take my basal body temperature (BBT) to chart ovulation, or anything other help with conceiving. Tracking Fertility: OPK vs. BBT. Q: Which is a better method of tracking fertility — an ovulation predictor kit (OPK) or basal body temperature (BBT) charting? A: An ovulation predictor kit changes color before you ovulate, based on a surge in your luteinizing hormone (LH), usually 1-2 days before ovulation.Yes absolutely. If you took the photo 4 times it would probably spit out 4 different numbers 😂 realistically the numbers don’t mean anything, all you’re looking for is a positive OPK, where the test line is as dark or darker than the control line.Sep 16, 2019 · BBT rise day before positive OPK. March 18, 2023 | by lliiivvii1112. I’m on cycle 7 trying to conceive baby #1. My BBT was raised yesterday (98F) and I hadn’t got a positive OKP yet so I figured I missed my peek. Because I’m curious I continued taking OPKs and got a very dark positive this morning along with... May 6, 2020 · Ovulation predictor kit (OPK) Ovulation predictor kits look just like the home pregnancy tests but they determine when you are ovulating instead. Unfortunately, different brands vary in their accuracy. If you are finding positive tests with the regular "pee-on-the-stick" kind, then you don't really need the fertility monitor. They are most effective when used together, because OPKs can tell you when ovulation is coming (usually) and BBT can confirm it happened. Not everyone ovulates 12-24 hours from their positive OPK, it can be up to 72 hours after and in around 20% of women (I’m one of them!) ovulation can actually occur prior to/ immediately after the OPK turns positive.A bit over 90% of cycles with a positive OPK are ultimately ovulatory (but not necessarily the day after the positive OPK, as the conventional wisdom would tell you). (EDIT: source here) Overall, no, it’s not necessary to track every possible fertility sign, and if you don’t want to track BBT, then you shouldn’t. Hiya, so I’m 7/8 dpo today… had positive opk on 17th and I had ovulation pain the same day so That’s why I say 7/8 dpo opk was negative the next day. I don’t check BBT but my Fitbit app shows a temp dip on 17th and then rise too.Aug 30, 2019 · Women who ovulate and check their basal body temperature (BBT) chart will probably notice a small, but sustained rise in temperature after ovulation, especially after a few months of experience with close monitoring. A woman who is not ovulating will not have that small temperature change. Tracking BBT in addition to cervical mucus can be helpful. Hi everyone, Diagnosed with PCOS in Feb. 2010. Was told to save my money and not bother with BBT, charting, and OPK's cause they wouldn't be accurate since I have PCOS.For most women, the answer is no. LH rises to tell the body that it is time to ovulate and surges 24-36 hours before the release of an egg. If you don’t see this surge, you probably took the test at the wrong time, ovulated early or late, or are experiencing an anovulatory cycle. Rarely, however, your baseline LH level may be high or low ... You don't O on the day of a positive opk. It's 12-36 hours after the positive opk, so that's the reason for the low temps for now. Sometimes you can get a positive opk and not O.Sep 3, 2011 · Hiya, so I’m 7/8 dpo today… had positive opk on 17th and I had ovulation pain the same day so That’s why I say 7/8 dpo opk was negative the next day. I don’t check BBT but my Fitbit app shows a temp dip on 17th and then rise too. This month... BBT rise day before positive OPK. March 18, 2023 | by lliiivvii1112. I’m on cycle 7 trying to conceive baby #1. My BBT was raised yesterday (98F) and I hadn’t got a positive OKP yet so I figured I missed my peek. Because I’m curious I continued taking OPKs and got a very dark positive this morning along with...I looked up this question earlier today, actually. I am having a similar thing; fatigue, o-pains, acne, +opk's, temp low, and I mean what my temp is usually w/o the clomid and progesterone. What I found out was that you can have +opk's and still not ovulate. Anyway, you can have the LH surge and not ovulate if your egg isn't fully ready to let go.Jul 7, 2020 at 9:39 PM. I would count ovulation 12-36 hrs after your Peak result. Thats how I've always done it and I've been successful. I continue to have positive opk for 1 or 2 days after the peak one but i know LH is coming down at that point. And i would BD on ovulation day and the next 2 or 3 days after as well. Bbt Spike But No Peak Fertility On Opk. K. Karter2013. Mar 23, 2015 at 10:39 AM. I have been TTC since December and still no luck. I started temping this cycle and got a big temp spike this morning. I am using clearblue advanced opk's and I have only gotten two flashing faces which means high fertility, but I haven't gotten a peak fertility yet.1. Changes in basal body temperature (BBT) Your BBT is your lowest body temperature (your body temperature at rest) in a 24-hour period. On the day after you ovulate, your BBT will go up slightly, by 0.5 to 1.0 degrees Fahrenheit. It will stay elevated until your next period. It may also dip slightly just before the increase.Jan 4, 2017 · Even with a slow rise, a temperature pattern usually becomes apparent after a few days. It can be helpful to consult with other fertility signs such as cervical mucus and cervical position. Ovulation is most likely to occur on the last day of fertile cervical mucus. But with a slow rise it can sometimes be difficult to pinpoint the exact day of ... Tracking Fertility: OPK vs. BBT. Q: Which is a better method of tracking fertility — an ovulation predictor kit (OPK) or basal body temperature (BBT) charting? A: An ovulation predictor kit changes color before you ovulate, based on a surge in your luteinizing hormone (LH), usually 1-2 days before ovulation.Apr 14, 2023 · OPK and BBT not aligning. Wondering if anyone ever has their BBT and OPK not match up. I use clear blue digital advanced and I got the static smiley on Saturday 4/1. But my BBT didn’t rise until Saturday 4/8, so fertility friend has ovulation day being Friday 4/7. I had ewcm that Friday to Sunday 4/7-4/9. Even with a slow rise, a temperature pattern usually becomes apparent after a few days. It can be helpful to consult with other fertility signs such as cervical mucus and cervical position. Ovulation is most likely to occur on the last day of fertile cervical mucus. But with a slow rise it can sometimes be difficult to pinpoint the exact day of ...In order to "prove" ovulation yes a rise in temps is needed but my OBGyn seems to think that the opks tests are the best standard for tracking ovulation. Also keep track of cervical mucus, that helps too. If you have a 30 day cycle I would start testing one opk a day starting around day 12 and then do twice a day on days 14/15 (or whatever days ... Hi All. Husband and I started TTC mid oct 2017. Came off oral contraceptives in 1st week of Oct 2017. Have started using OPK and BBT this cycle (currently on cd16 and last cycle was 29 days, previous cycle was 23 days) but still havent had a positive OPK result (clear blue pink tests) which i check first thing in the morning as the pack tells you to.If your OPK is positive but your temperature never spikes, it could be a one-time fluke. But if it continues to happen pretty regularly and you're sure you've dotted your Is and crossed your Ts ...If your ovulation test is positive, this means that your LH levels are above the threshold considered to be “surging” – meaning that ovulation will likely happen within 24-36 hours. At rest, typical LH levels for women are between 5-25 IU/L, and during the LH surge, they can peak up to 100+ IU/L. The most common and reliable threshold for ... In order to "prove" ovulation yes a rise in temps is needed but my OBGyn seems to think that the opks tests are the best standard for tracking ovulation. Also keep track of cervical mucus, that helps too. If you have a 30 day cycle I would start testing one opk a day starting around day 12 and then do twice a day on days 14/15 (or whatever days ... Jackelbee3. don't bother with any pregnancy tests if your temp starts to decline. It should be elevated after ovulation and will decline steadily if AF is coming. Sounds like you are doing all of the right things. Good luck to you. Charting my BBT along with using the OPK have really helped me a lot. Jacks.A Discussion on OPK’s vs BBT Charting. Many women become confused when their OPK’s (Ovulation Predictor Kits) and BBT’s (Basal Body Temperatures) don’t agree on the day of ovulation- understandably so. This is one of the more confusing topics I’ve researched! We’ll file this under “advanced topics”. Here’s why.Sep 12, 2018 · Tracking Fertility: OPK vs. BBT. Q: Which is a better method of tracking fertility — an ovulation predictor kit (OPK) or basal body temperature (BBT) charting? A: An ovulation predictor kit changes color before you ovulate, based on a surge in your luteinizing hormone (LH), usually 1-2 days before ovulation. A Discussion on OPK’s vs BBT Charting. Many women become confused when their OPK’s (Ovulation Predictor Kits) and BBT’s (Basal Body Temperatures) don’t agree on the day of ovulation- understandably so. This is one of the more confusing topics I’ve researched! We’ll file this under “advanced topics”. Here’s why.I am using cheap OPK strips and Ovia. Ovia became much more accurate after the OPK's because I don't ovulate until day 19-20 (of a 32-34 day cycle). I don't think I'll temp because I'm one of those people who will obsess over it (same reason I can't count calories because it'd go downhill quickly). Sep 19, 2012 · A Discussion on OPK’s vs BBT Charting. Many women become confused when their OPK’s (Ovulation Predictor Kits) and BBT’s (Basal Body Temperatures) don’t agree on the day of ovulation- understandably so. This is one of the more confusing topics I’ve researched! We’ll file this under “advanced topics”. Here’s why. Yesterday I OPK tested twice with a seemingly positive results (if not 100% it was really, really close). I OPK tested again this morning and the…I am still in shock - I got a bfp today. I was desperately hoping I would get af soon (I have only had one pp period so far) so we could officially start ttc with all the bells and whistles (opk, bbt, supplements, etc). I was actually excited for the cramps I have been feeling - I figured she was right around the corner! I don't know how long I will get to hang around here - but for the moment ...A BBT spike (or progesterone testing) will show that ovulation did actually happen. So it's possible that while you're getting a positive OPK, you may not actually be ovulating when you think you are. If you do eventually get a BBT increase, it could mean that your body is trying again and successfully ovulating the 2nd time.Aug 25, 2022 · OPK + BBT all over the place. Hey! I’m 28y, and new here. This is my 1st month ttc, I’ve been tracking my BBT (not always at the same time, between 7 and 8am) and my LH daily. I’m on CD 11 and my BBT has frequent ups and downs, also my LH some days is lower than the previous days like for example today I’ve logged into the app and says ... If you have fertile cervical mucus but no rise in temperature, it could be that you're not ovulating. While fertile quality cervical mucus can warn you that ovulation is coming, so you can time sex for pregnancy, it doesn't confirm that ovulation actually took place. You can have fertile quality cervical mucus, but not ovulate.EWCM is not an indicator of ovulation, just that it should be happening soon. 2. It could be seminal or arousal fluids if you have BD in the last 12-24 hours. Most women know this but its worth saying as most couples tracking CM are also BD regularly around the time they think they are going to ovulate. 3.I was diagnosed with endometriosis and pcos. I started metformin last month, used provera to kick in my period then letrozole on cd 3-7. FF had marked cd 10 as my ovulation but that is way too early for me. My typical cycle is more or less 45 days and I ovulate somewhere from cd 25 onwards. But my BBT have been up.Jun 28, 2023 · Ovulation tests are easy to use. Ovulation kits work similarly to home pregnancy tests—you simply pee on the test stick, activating a chemical that can detect your LH surge. Many OPKs come as a ... BBT is more "accurate" in that it is the only of the two that will actually confirm that you've ovulated. Unfortunately, it only tells you after the fact. It is possible to get a +OPK and not ovulate, which is why OPKs are not always accurate. I would recommend using both--Use OPKs until you get a +, then have sex every day (if possible) until ... Mar 24, 2021 · Basal body temperature (BBT) tracking: Before and after ovulation, BBT (your body’s lowest resting temperature) dips, then rises again. Tracking this shift can let you know if an egg was released. Tracking this shift can let you know if an egg was released. I was diagnosed with endometriosis and pcos. I started metformin last month, used provera to kick in my period then letrozole on cd 3-7. FF had marked cd 10 as my ovulation but that is way too early for me. My typical cycle is more or less 45 days and I ovulate somewhere from cd 25 onwards. But my BBT have been up.Hello :) this is a group for ladies who are trying to concieve the miracle of life👣 . Through the hardships, loss, gain and everything in between we will be here to help you through it and support you. Please join our group and help us grow; we want to build our community so everyone's questions can be answered!BBT is more "accurate" in that it is the only of the two that will actually confirm that you've ovulated. Unfortunately, it only tells you after the fact. It is possible to get a +OPK and not ovulate, which is why OPKs are not always accurate. I would recommend using both--Use OPKs until you get a +, then have sex every day (if possible) until ...Ovulation test strips are urine tests that you use at home to detect impending ovulation. They work by detecting the luteinizing hormone (LH), which increases to prompt the release of the egg during ovulation. Sometimes they are called ovulation predictor kits (OPKs), or simply ovulation tests.Advertisement ... Hi everyone, I got my +opk on cycle day 12 around mid day and my ff chart says that i ovulate on day 12 aswell, I'm using the clear blue digitals.. they say once you get the peak smiley not to keep testing but being impatient 🙈 I decided to use my other reader, I got a negative the evening of the 12 which I now know is because it had never been used and had no baseline reading but the next ...Between oversleeping one day, some sleep deprivation, heavy drinking one night, indiscernible OPK results, and using the least-adored BBT on TB, I'm basically just crossing my fingers at this point. Thought the temp would go up today for O yesterday but it went down so I'm hoping O today for pretty good timing. Jun 20, 2022 · Personally I do both. Opk predicts BBT confirms. Of the two I like bbt more. I don’t find it difficult at all, but I’m still ttc#1 so no one wakes me up at night. Just set an alarm for the same time every morning and keep the thermometer and your phone or a pencil beside the Mar 2, 2018 · In the 3-5 days leading up to ovulation, your cervical mucus will become an egg white consistency, clear and stretchy. This is your fertile mucus and keeping track of it will help you to determine your fertile window. Height of cervix In the days before ovulation, your cervix will change position and shape to help the sperm travel to the ... Nov 11, 2017 · I've been reading online that some women don't get their temp rise until 3 or 4 days after a positive opk. Praying this happens to me. Plan on continuing with OPKs and bd'ing every 2 or 3 days ... Hello lovelies I am currently on CD20 and I think I Ov on CD18 Bedtime of CD17 I was convinced my opk was positive however my apps confirmed it wasn’t quite… Oh and by the looks of things, you don't necessarily need a BBT but I've really loved having more accurate charts. :) I got my Life Brand BBT at Shoppers Drug Mart. I change them every 3-4 months so I can rely on my temps being accurate. I don't use a new BBT until the next cycle though.swirl25 member. member. member. My temp rises anywhere between 2 and 4 days after a +OPK. Everyone is different. My OBGYN said this is super normal - your LH surge can either trigger an O right away or a few days later! Lesley0228 member. My O is typically two days after my first +OPK.It is now Thursday (CD24) but by BBT has not risen - it has in fact been going down! What is happening and is there still a chance I can ovulate since my BBT hasn’t shifted? My BBT cycle last month indicated a temp shift immediately after ovulation on CD20 (didn’t use OPK last month). I’m quite worried I didn’t ovulate this month.BBT is more "accurate" in that it is the only of the two that will actually confirm that you've ovulated. Unfortunately, it only tells you after the fact. It is possible to get a +OPK and not ovulate, which is why OPKs are not always accurate. I would recommend using both--Use OPKs until you get a +, then have sex every day (if possible) until ... Basal body temperature (BBT) tracking: Before and after ovulation, BBT (your body’s lowest resting temperature) dips, then rises again. Tracking this shift can let you know if an egg was released. Tracking this shift can let you know if an egg was released.For most women, the answer is no. LH rises to tell the body that it is time to ovulate and surges 24-36 hours before the release of an egg. If you don’t see this surge, you probably took the test at the wrong time, ovulated early or late, or are experiencing an anovulatory cycle. Rarely, however, your baseline LH level may be high or low ... Aug 30, 2019 · Women who ovulate and check their basal body temperature (BBT) chart will probably notice a small, but sustained rise in temperature after ovulation, especially after a few months of experience with close monitoring. A woman who is not ovulating will not have that small temperature change. Tracking BBT in addition to cervical mucus can be helpful. Mar 15, 2017 · A positive opk means your body is gearing up to release the egg. It is possible for the egg not to be released. What usually happens is your body will have another lh surge in a few days to try to release the egg again, resulting in a late cycle. Mar 23, 2015 · Bbt Spike But No Peak Fertility On Opk. K. Karter2013. Mar 23, 2015 at 10:39 AM. I have been TTC since December and still no luck. I started temping this cycle and got a big temp spike this morning. I am using clearblue advanced opk's and I have only gotten two flashing faces which means high fertility, but I haven't gotten a peak fertility yet. In the 3-5 days leading up to ovulation, your cervical mucus will become an egg white consistency, clear and stretchy. This is your fertile mucus and keeping track of it will help you to determine your fertile window. Height of cervix In the days before ovulation, your cervix will change position and shape to help the sperm travel to the ...This is usually the case with endometriosis. If you do not ovulate, then you may still experience bleeding that is often mistaken for menstruation. This anovulatory bleeding will be irregular, varying in flow, duration and schedule. Without ovulation and resulting lack of progesterone to balance the effects of estrogen, your uterine lining ...Ovulation tests are easy to use. Ovulation kits work similarly to home pregnancy tests—you simply pee on the test stick, activating a chemical that can detect your LH surge. Many OPKs come as a ...Apr 2, 2011 · I am still in shock - I got a bfp today. I was desperately hoping I would get af soon (I have only had one pp period so far) so we could officially start ttc with all the bells and whistles (opk, bbt, supplements, etc). I was actually excited for the cramps I have been feeling - I figured she was right around the corner! I don't know how long I will get to hang around here - but for the moment ...
Therefore, BBT and OPK combined will let you know if you are really O'ing. If you are still in doubt then you should have your doc test and see if you are or not. I have cysts and was not O'ing at .... Atandt yahoo mail sign in
Nov 11, 2017 · I've been reading online that some women don't get their temp rise until 3 or 4 days after a positive opk. Praying this happens to me. Plan on continuing with OPKs and bd'ing every 2 or 3 days ... If your ovulation test is positive, this means that your LH levels are above the threshold considered to be “surging” – meaning that ovulation will likely happen within 24-36 hours. At rest, typical LH levels for women are between 5-25 IU/L, and during the LH surge, they can peak up to 100+ IU/L. The most common and reliable threshold for ...Sep 7, 2022 · Ovulation test strips are urine tests that you use at home to detect impending ovulation. They work by detecting the luteinizing hormone (LH), which increases to prompt the release of the egg during ovulation. Sometimes they are called ovulation predictor kits (OPKs), or simply ovulation tests. Are you taking your BBT its the only real reliable way to tell if you have Ovulated. But if your getting highs then I would just keep having sex and hoping that you catch O even if you don't get a peak. I'm really sorry this is so frustrating for you. Hello lovelies I am currently on CD20 and I think I Ov on CD18 Bedtime of CD17 I was convinced my opk was positive however my apps confirmed it wasn’t quite… Aug 24, 2019 · Haha! Don't even ask when I start xmas prep. Still camping but I lost my group for a bit. My temp was pretty consistent this morning. I missed my alarm but the birds woke me up. Using the OPK in the camp bathroom was an experience but it was darker from the day before though still not a clear positive. CS/Q: I'm glad I started temping and using ... A Discussion on OPK’s vs BBT Charting. Many women become confused when their OPK’s (Ovulation Predictor Kits) and BBT’s (Basal Body Temperatures) don’t agree on the day of ovulation- understandably so. This is one of the more confusing topics I’ve researched! We’ll file this under “advanced topics”. Here’s why.Jun 13, 2023 · 1. Changes in basal body temperature (BBT) Your BBT is your lowest body temperature (your body temperature at rest) in a 24-hour period. On the day after you ovulate, your BBT will go up slightly, by 0.5 to 1.0 degrees Fahrenheit. It will stay elevated until your next period. It may also dip slightly just before the increase. Aug 4, 2016 · This is usually the case with endometriosis. If you do not ovulate, then you may still experience bleeding that is often mistaken for menstruation. This anovulatory bleeding will be irregular, varying in flow, duration and schedule. Without ovulation and resulting lack of progesterone to balance the effects of estrogen, your uterine lining ... BBT shows AFTER O. (You don't get your change on BBT until after you have already O). OPK advised 24-36 hours PRIOR to O. By using OPK and BBT, you should forecast your O date with the OPK and verify you did O via BBT. Whenever you get a few minutes (okay, like 20 or so), I recommend checking out peeonastick.com. This is a very thorough website ...Every cycle I have been able to measure the LH surge, and also the temp increase when I have ovulated and drop in BBT when AF is arriving. My FP/Ovulation has been all over the place though, so literally I measure OPK 2 times a day just to make sure I don't miss it. The range has been 18-37 days for ovulation - yup, that's a lot of OPKs! Sep 3, 2011 · Basically, your negative OPK could mean several things. 1) You haven't gotten your surge yet. 2) You have gotten your surge (probably yesterday) and are ovulating today, but for whatever reason didn't ever see the positive OPK. That could be because you didn't test yesterday, or you may have a really short surge. .