A member asked:

I had sex saturday, this was the second possible ovulation day according to her minstrual app. i went to the store the next morning and bought a plan b one use. she took it within 12 hours of sex. can this stop ovulation if it had not occurred yet?

A doctor has provided 1 answer

Plan B should work: Plan B works most of the time, but not all of the time. One should do a home urine pregnancy test 3 weeks after taking Plan B. Also, use a reliable form of birth control all the time, so that emergency contraception such as Plan B will rarely be needed (hopefully never) in the future.

Answered 6/6/2018

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Thank

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