Hello Anonymous,
Plan B is most effective in preventing pregnancy when taken within 72 hours after unprotected sex. You know it worked if you have vaginal bleeding. If you do not have bleeding within 3 weeks of taking the pill, take a pregnancy test.
The pill works right away.
Regards, Maryann
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Hello Anonymous,
Plan B is most effective in preventing pregnancy when taken within 72 hours after unprotected sex. You know it worked if you have vaginal bleeding. If you do not have bleeding within 3 weeks of taking the pill, take a pregnancy test.
The pill works right away.
Regards,
January 15, 2015 - 10:48amMaryann
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