What to do?

My Boyfriend keeps pushing off sex, like he will mess around and fake hump me and stuff and then when he wakes up in the morning he will shove his hard ass dick on my butt, then when I try to get some he has some excuse. (I'm in pain, I don't feel good) there is always something. It is really starting to piss me off. He never was like this until recently. He has no phone unless on wifi which we don't have so I doubt he is cheating. We live together and he never wants to go anywhere. But god damn. What the fuck. What should I do because this is not cool.