I'm 19 years old and I started birth control about a year ago and my periods have been normal and regular ever since. About two days before my last period I had a brown discharge and then the day I ended my period (4 days later) it started back up again. I had a uti about two weeks before my period that I had to go on two rounds of antibiotics for and i missed two of my birth control pills and I have never done that before. Could the antibiotics messing with my birth control be the cause of the brown discharge? I am kind of worried and I wasnt sure if I needed to make an appointment with my doctor. Any feedback at all would help. Thanks!