weird bleeding after sex

okay let me start this by saying i got off birth control about 2 weeks ago. and had the bleeding when you get off of it already. i haven’t had sex in 8 months 🙄 and me and this guy had sex last night and he was by far the biggest i had ever been with. i couldn’t act like that though (can’t act scared given that opportunity). so we have sex and i’m acting like i’m totally fine. after i was sore and this morning i was too (not the first time i’ve had sex i’m 21) 🙄 so i go to the bathroom and i am bleeding like crime scene bleeding. please tell me this has happened to somebody before and i’m not just weird 😂