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A member asked:
Period is late, i took plan b like a week ago is that why? just took a negative pregnancy test
A doctor has provided 1 answer
Maybe: Plan B can alter the menstrual 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 (that's about 21 days after sex), because Plan B works most of the time, but not all the time.
Answered 4/4/2015
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