Hmmm....: Plan B, Postinor 2, and other brands of emergency contraceptive pills can alter the menstrual cycle vaginal bleeding for the cycle in which Plan B or Postinor 2 was taken, and sometimes the next month's cycle too. One should be sure to check a home pregnancy test about 3 weeks after sex, because emergency contraceptive pills work most of the time, but not all the time.
Answered 5/19/2018
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A doctor has provided 1 answer
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