Other half.

I was going to post this in the sex-relationships discussion but it didn't seem to fit. I am having a problem with my husband now that I am pregnant he seems angry and disappointed. He hasn't been supportive. He won't stop conspiring me to his ex (they have a child together). If I get upset he calls me crazy, and is saying I am treating him bad. When I haven't even done anything. I literally just want to leave and not come back. He won't stop picking at everything I do and don't do. I just can't handle it. He is also fighting to get custody of his daughter who is in foster care, and he is putting her first in situations now and ones that will happen in the future. I have a 5 year old son and I have not thought that way at all. He is being so selfish just wants to play video games. I really can't take it anymore and don't know how to talk to him because every time he gets so defensive.