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A member asked:

One night stand: on 1 fertile day, he precame.. then had sex with bf 4days later during ovulation and he came inside.. next day took plan b did it wor?

A doctor has provided 1 answer
Dr. Heidi Fowler answered

Specializes in Psychiatry

Agree with earlier: input. The Plan B is to be taken after an episode of failed birth control. Pre-ejaculate can contain live sperm. Take a home pregnancy test to know.

Answered 11/26/2017

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