Am I in the wrong?

My boyfriend gets upset and mad if I don't want to have sex. Last night he wanted to in his words "beat and stretch out my pussy and ass." I didn't fell like doing it because I am 25 weeks Pregnant and I get tired and go to sleep. Today he is saying that I don't love him or want him anymore just because I was to tired. He also gets mad if I don't want other people to join in sex and then he says he's going to pack his stuff and leave because I don't give him what he wants sexually.