Hi, I just started my second month of birth control pills. I am on the 21 hormonal 7 day sugar pill kind. Two weeks into my 1st pack I had to take bactrim for a uti I had and me and my boyfriend had unprotected sex (October 12) two days after I finished it. I was freaking out because I thought that the antibiotic would mess with it but 4 days into my sugar pills I got my period (which was surprisingly heavier than I thought) and it stopped the day I took my first hormonal pill of the 2nd pack. Me and my boyfriend had sex the last day of sugar pills. Now, 6 days into my 2nd pack I feel a slight slight cramping but no bleeding or anything. Was I protected during sugar pill week since I took antibiotics two weeks before???