HELP ME! Spotting/early period

My boyfriend and I have been having way more sex than we usually do for about two weeks, and today I started bleeding like a lot. Idk much about spotting and stuff but I assume it shouldn’t be this much blood. Am I starting my period early or am I pregnant or what??? I’m confused as hell and it’s worrying me a lot. I’ve been have really bad persistent cramps since last weekend when we had sex and I figured I was just sore where he hits my cervix at certain angles, but it hasn’t gone away and now I’m bleeding. I’m on the pill but I read that my antidepressants can make it less effective. I hope I’m just being paranoid.