Bleeding before period??

I’m supposed to start my period in 9 days. I’m on birth control and i had sex Friday night (it was kinda rough) and then Saturday night. I used the bathroom tonight 5/20 and there was blood when i wiped and it was bright red. I’m scared to death right now and don’t know what to do. I tested negative for chlamydia and gonorrhea a few weeks ago and this is first time i had sex , any ideas?