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Negative OPK, temperature shift, positive OPK

By June 16, 2009 - 10:31am
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Alright so, I knew my body was gearing up to ovulate because of the physical signs (fertile CM, HSO CP). I had been using OPKs several times a day for several days--all negative. Yesterday, my fertile CM turned back to creamy (typical for me after O) and my cervix hardened back up. I woke up this morning to a temp shift (a nice jump) and just for the heck of it, decided to do another OPK. Well, this time it came out positive.

How could my temps be saying I already ovulating, but my OPK is just now saying I'm surging? I'm thinking I may have drank/peed too much yesterday and the day before, but who knows. Does anyone have any idea how this strange sequence could have happened? Regardless, I guess I'm a player in the waiting game now. I'm thankful that at least I know that I did actually ovulate.

Thanks in advance!

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Hi Lauren,

It is a waiting game...you're right! It's the very reason the "OPKs" (ovulation predictor kits) use the word "predictor" in the title...they are not 100% conclusive, and are true to their name ("prediction"): an advance indicator of when you are most likely to begin ovulation, or are currently ovulating.

Same goes with taking your basal body temperature. There are many factors that can cause tiny fluctuations in your temperature, and this method also does not claim to pinpoint ovulation with much accuracy.

The reason to use the ovulation predictor kits, track cervical mucus (CM) and/or take basal temperature for a few months before actively trying to conceive is for information gathering purposes only; not to exactly pinpoint ovulation each cycle. In information gathering, you are looking for trends, over time, that can assist in your knowing about the time you probably ovulate each cycle.

Good luck, and have fun "trying" to conceive! :)

June 16, 2009 - 1:14pm
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