Stressed and pregnant

I am 35 weeks pregnant and all throughout my pregnancy I’ve been going through a lot with my child’s father. After months of him cheating and being emotionally abusive, I finally was strong enough to refuse being in a relationship with him because i know i deserve so much better. He constantly throws it in my face how I just want to be a single mother because I don’t want to be with him anymore. He’s so mentally abusive! We’ve already decided on my baby’s name, which he wanted him to be a Jr but I felt like my child should have his own first name so the baby’s middle name is his first name. He agreed and then decided he wanted to change it because “other people don’t like it”, i told him i wasn’t changing it and he got angry. Telling me he isn’t going to help me, he’s not signing the birth certificate, don’t ask him for anything, and he’s not coming to the hospital all because of my son’s name. This has been going on all throughout my pregnancy, the emotional abuse and disrespect. He’s sent me videos of him having sex with another woman, calling me out my name, just so much. He haven’t helped me and refuse to help unless we’re together. He didn’t come to the baby shower because he said he went out of town, no doctors appointments, no type of help at all from him, but his mother do mostly everything. I don’t want him in my child’s life at all but this is my first time being pregnant and i don’t know what to do in a situation like this. I don’t want him to be mentally abusive to my son when he’s here, i need advice on what can i do to help this situation.