Antibiotics
Penicillin

If you were taking penicillin on the last week of your pills and now you're on your period could you have sex when your period is over with no risk of getting pregnant?

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Answer

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Wiki User
02/28/2013

There is ALWAYS a risk - no form of birth control is 100% effective. If you do not want to get pregnant always use a condom in addition to your regular method of birth control (pills) not only will this be added protection but will help prevent the transmission of STD's and HIV/Aids.