Bleeding during sex

Hi guys so early on this year I popped my cherry and had sex quite a good few times after that which was no problem. The last time I had sex was July I am also on the jag contraception which has made me just a little bit throughout the day but every day. I’ve researched that this is normal but recently I had sex with someone and I had to ask him to stop it felt like the first time again and there was loads of blood it was just everywhere !! I’m not sure if it was cause I’ve not had sex in months or to do with the contraception I need help