well girly here is what i have to say, it is your body and if it hurts you gotta let him know. it is every persons right to say no. if he cant respect that then there is something wrong. it can be conciderd abuse if you look at that way it. i cant tell you to break up with him because its not my place its your follow your heart and mind you'll do the right thing. learn to say no again its you body.
cut him off maybe he will learn to respect you and your body. sex isnt always fun and games remember that.
i wish you the best
~nyki~