So I have UTI's really often. And I have to take Bactrim for it. I have been told this past week that antibiotics cancel out birth control and you can get pregnant. I always take my antibiotics a few days after I even think I'm over it just to make sure...my boyfriend and I had sex twice in one day (he came inside both times) and then two days after we had sex again. I'm currently on my placebo pills and I haven't started my period yet. I usually start it today or tomorrow but I'm still getting white, thick discharge. I usually stop having discharge the second day but I haven't yet. I don't want to freak out, but I was just wondering how many women have gotten pregnant while taking birth control and antibiotics!😳