A member asked:

Im on combined pill but started taking 400mg of flagyl day and night for 7days on tuesday. i had unprotected sex on wednesday night. pregnancy likely?

A doctor has provided 1 answer
Dr. Stephen Richards answered

Specializes in Obstetrics & Gynecology

Not likely: Antibiotics can sometime limit effectiveness of oral contraceptives. Since the time frame is short, not likely you would become pregnant. Back up birth control would be warranted this cycle.

Answered 9/27/2014

3.7k views

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