I'm 18 and have been on birth control for a few months now (maybe 5 or 6). My boyfriend and I have sex without a condom but he never finishes inside of me. I finished my period on 12/1 and had sex on 12/7. It was rough sex and around a day after that up until now 12/11 I've been experiencing light brown discharge and very slight cramping. This hasn't happened before, not sure if maybe something tore during sex? Any answers?