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Would breakthrough ovulation while on the pill only occur at mid cycle, or can it happen later (day 20)?

By Anonymous February 27, 2013 - 8:57pm
 
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Dear Ask The Doctor: If a breakthrough ovulation would occur while on the birth control pill, could it occur at anytime of the month, or only around the typical ovulation time (day 14)? I was late taking about 5 pills this month at various times in my first, second and third weeks (up to a maximum of 14 hours late for each pill I took late), and then on day 20 of my pill pack, I felt a distinct cramping feeling on my left ovary that stayed with me throughout the afternoon and evening, but was gone the next day. I also noticed egg white cervical mucus that day, as well as two days afterwards. I am on Yaz, and am now on day 25 of my pack (the first of the 4 placebo pills in this brand). Is it possible that I could have had breakthrough ovulation on day 20? And if so, theoretically, it would mean that if conception occurred I may not get my period in the next 4 days before starting a new pack, and that implantation would only occur around 7-10 days after day 20 (presumed breakthrough ovulation), which would mean that i should not take a pregnancy test until approximately 2 weeks after day 20, correct?

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Dear Anon,

I think you may be overanalyzing this. Ovulation tends to occur at mid-cycle on or around day 14. However, this isn't set in stone and ovulation can occur on day 20. If conception did occur, then you won't be getting a period this month and you could test for pregnancy once your period if officially late. 

Good luck,

Rosa

February 28, 2013 - 6:31am
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