I hate how my parents are divorced and my dad comes to get his mail from me and my mom yells and…

I hate how my parents are divorced and my dad comes to get his mail from me and my mom yells and cusses at me for him coming to the house when she knew he was stopping by. I have my 1 yr old sitting on my lap scared half to death by of her nonstop screaming at me. I try so hard not to fight back considering I'm a high risk pregnancy and stress and anxiety put me in preterm labor with my first. I'm 33 weeks and my mom knows how hard this pregnancy has been and she doesn't even care! I get so emotional bc now I have a new baby coming in December and she's going to be in this house with my mom screaming for nothing. I leave my husband for domestic violence and then the only other choice I have is here with my mom. it's like nothing can ever be peaceful for me.. I'm starting to feel like I don't even deserve peace. it sucks.. I just don't know what to do anymore..