A member asked:

Hi, my girlfriend took plan b pill after unprotected sex it been 4 days she didn't get periods yet does it take longer then that?

A doctor has provided 1 answer

See below: Plan b works the best if taken within 72 hours of unprotected intercourse. It can take several weeks for period to start.

Answered 6/30/2014

5.3k views

Thank

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