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A member asked:

Can u get pregnant on fertile windows because the app i use is flow and when ur on your fertile windows and bout to ovulate its blue i was suppose to ovulate today and i have not,i had sex on my fertile windows and2-3 before ovulation so did planb?

A doctor has provided 1 answer

1/10 chance,: If you take it within 72 hours after you've had unprotected sex, levonorgestrel can reduce the risk of pregnancy by up to 89%. If you take Plan B One-Step within 24 hours, it is about 95% effective. But you should know that Plan B One-Step is not as effective as regular contraception.

Answered 3/10/2020

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