About Postinor 2: Plan B, Postinor 2, and other brands of emergency contraceptive pills can alter the menstrual cycle for the cycle in which Plan B or Postinor 2 was taken, and sometimes the next month's cycle too. The pills are for rare EMERGENCIES, and not for routine birth control (use a different method for that). One should be sure to check a home pregnancy test about 3 weeks after sex.
Answered 12/24/2019
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A doctor has provided 1 answer
3 doctors weighed in across 2 answers
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