Postinor EC: Postinor, emergency contraceptive is highly effective in preventing pregnancy when taken soon after unprotected sex. It is 95% effective in preventing pregnancy when taken within 24 hours of unprotected sex. Take a home pregnancy test 3 weeks after unprotected sex. Postinor may also disrupt the menstrual cycle so bleeding may be irregular for a cycle or two.
Answered 4/12/2017
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