Bleeding During Sex?

The last 2 times I had sex with my boyfriend I started bleeding during and for about an hour afterwards with some cramping. Neither time has been close to my period and I’m not pregnant. We’re both very confused as to what’s causing this. Do any of you ladies have this problem?

He is very rough and does hit my cervix a lot but it wasn’t an issue at the beginning. Any ideas as to what is happening or how to fix this would be greatly appreciated.