I don’t know what to do

My fiancé and I have had a really hard time. I’m currently 30 weeks pregnant with his child. His mother and I are not on speaking terms because she takes everything to heart and cannot seem to not take everything I say directly towards her. She swears she bends over backwards(which she does not. All she does is sit on her ass, doesn’t work or anything and expects things to be handed to her) well come to find out he tells her “I’m sorry she’s a bitch” and who knows what else. He doesn’t stick up for me like he should. He doesn’t agree or disagree with her, about things that deal with his and my relationship or about me in general.

I just feel like crying but I can’t cry anymore. I don’t know what to do.