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A female asked:

My period came 15 dys early 2 my predicted date may23 but i had unprotected sex on apr 29 but on the pill norethindrone 0.35mg my last period apr15?

1 doctor answer3 doctors weighed in
Dr. Mary David
Specializes in Obstetrics and Gynecology
Uncertain: I'm not sure what you mean by unprotected sex if you are on the pill. Mini pills containing only a progestin like norethindrone protect against pregnancy but do not do a good job of regulating periods so bleeding can be irregular just because of that. Of course STDs can also cause irregular bleeding and the only way to know for sure is to be tested. Hope this helps.

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Last updated May 8, 2015

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