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Birth Control Pills & Calculating Ovualtion
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Anon_30893 posted:
Hello,
I am using a fertility calculator to determine at what time of the month I am least fertile. The calculators ask for the first day of your last period. I'm on birth control pills, so do I enter the date that I start the placebo pills or the actual date I start bleeding? Thanks for any advice!
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FCL responded:
This is a pointless exercise. When you take BCPs you do not ovulate (that's one of the ways the pill works, it stops you ovulating) therefore you don't have a fertile/less fertile time of the month. You can throw the fertility calculator away


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