I don't know what to do

My relationship with my boyfriend has always been rocky, and for the past several months I'd been thinking about ending it for good. Then I found out I'm pregnant, and though my doubts about our relationship grew I tried to fix things between us. I don't know if it's the hormones or what, but after today I really don't know if there's a point in staying together.

Today I told him when the baby gets big enough to hear I want to change what music we listen to while I'm in the car. We both listen to a lot of rap and he's into juggalo music that I don't like, but put up with. We would both have to quit listening to music we like, but he'd still be able to listen to whatever he wants every day when I'm not in the car with him. He took this as I was insulting him and his music because I said that kind of music (both of our preferred music) tends to make people more disrespectful and just looking to party and have sex. It ended with him saying I'd be a bad mother and me crying and pushing him out of the apartment. I didn't react well at all, but that's a fear he knows I've been having since I found out I'm pregnant because my own mother was horrible at it. It just broke my heart and cut me deeper than anything else he's ever said to me and since he left for work I haven't been able to quit crying. He came back inside once after I made him leave to get a water bottle, asked why I was crying and when I told him to just go he continued to insult me until I was screaming at him to get away from me. He keeps texting me even though I basically begged him to leave me alone and every time he does it just drives me right back over the edge.

Now I'm sitting here thinking about going to my mother's house for the night, but I'm not sure I'd want to come back at all. I just can't see myself forgiving him for that. Am I just being over emotional or is it okay that I feel this badly about it? How do I get over it?