
I took a short term of Bactrim, only 3 days. I know that you need to use a backup method of birth control, which I have been doing ever since. I did have unprotected sex with my partner the day before I started it but that is it.
I am concerned because I am on birth control and always get my period on the Tuesday after I finish my pack and I never did. I took a pregnancy test which was negative but I am still very worried.
Does Bactrim effect my menses at all?

December 7th, 2011
Dr. Consultation
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