Lost, what should I do?

Hello, I’m a 22 year old SAHM mom to a 9 month old son. The relationship with my baby’s father has been toxic, we were going to go our separate ways if it wasn’t for me being pregnant. In the beginning of my pregnancy we would argue a lot, and I was very emotional due to pregnancy I would cry for hours. When I was about 4 months pregnant he socked me in my jaw, we’ve been arguing for days and whenever we would argue I would sleep alone in bed. I’ve always mentioned to him that whenever he would do that I felt alone. So that day he was arguing with me and I was already mad so I started arguing back and usually I’m always quiet, me arguing back triggered him and he socked me in the jaw. I wasn’t able to eat, I went to the er they took test and nothing was fractured but it hurt and I couldn’t eat. We didn’t speak to each other after that. Every time we would argue I would go to my mom’s house and stay there for days. The longest at my mom’s house was a month, he didn’t like that at all. Once I came back he told me that I wasn’t able to go to my parents house, he mentioned that if I was back living in his house I wasn’t able to leave. He’s laid hands on me multiple times, I’ve always forgave him because I don’t like arguing with him or being in bad terms with him. Last week we were at a public parking and he got mad at me parking so he grabbed me and shoved me into a car that was parked next to us. He apologized right away saying he was in the wrong(he never does that). I forgave him, again.. He goes out a lot with his friends at first it didn’t bother me because he works and I give him time to himself. But it started being an every other day thing. It started to bug me because we as a family don’t even go out as much as he does(with his friends). Two days ago he mentioned he was going out, before he left that day he went to the restroom and came back. Once he came back I asked him if he can hold our son really quick so I can use the restroom. I went in the restroom for 2 minutes once I got up from the toilet he opens the door and spits out mouthwash. I reached for out son and he steps back and pushes me I immediately tried to fight back but I held myself back and took a deep breath. Since he saw me try to fight back he handed our son to my MIL and closed the bathroom and started yelling at me saying to “hit him to do something to touch him” I didn’t do anything. He then told me to leave his house and to leave our son with him (mind you Im with our son 24/7 the most he’s held him for would be a hour no exaggeration) I told him I’m not leaving without my son. He then tells me he’s going to leave( with his friends because they were already waiting for him outside) and that if I leave without our son he will find me and take our son away from me. Ever since he hasn’t talked much to me he hasn’t been sleeping here. I don’t know what to do! I’m lost I usually always talk to him feed him and we go back to “normal” but this time I don’t want to “kiss his ass” after he kicked me out his house!? Because I attempted to touch him. He’s laid hands on me plenty of times and never have I ever threatened him to reporting him to the police or to leave him. I care about him and we do have good moments together as a family. But it feels like the more I speak up or stand up for myself the worse it gets.