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A member asked:
Been on antibiotics for a week, on birth control, but very light spotting... no sexual intercourse, period not expected for a week, normal?
A doctor has provided 1 answer
YES !: Not well recognized , but antibiotics interfere with estrogen, which controls your mensrual cycle. Therefore, antibiotics can result in spotting or breakthrough bleeding. You need to use alternate birth control methods while taking antibiotics , at least condoms and spermacide.
Answered 10/3/2013
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