A member asked:

I took plan b. period isn't due for 3 weeks. if i experience withdrawal bleed from plan b does it reset my periods or should i still expect it on time?

A doctor has provided 1 answer

Sometimes: Plan B can alter the menstrual bleeding for the cycle in which Plan B was taken, and sometimes the next cycle too. One should be sure to check a home pregnancy test about 3 weeks after sex, because Plan B works most of the time, but not all the time.

Answered 4/8/2016

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