Breakup?

I feel like my fiancé and I are never going to work. He claims I always want to be right. But I point out that we both tend to think we are right and don’t give up. Then I’m saying it’s all him... am I wrong or did I say it’s an us problem as in we both need to fix it?

Also after I found out we were losing our first pregnancy I asked him to leave. He didn’t after some rude comments telling me I needed to get over it and stop living in the past. Now he wants to blame everything on the fact that I went to some other guy for comfort after telling him I didn’t want to be with him. So I’m a cheater. And I made him an asshole. And I’m the problem. Pretty sure me asking you to leave and saying I don’t wanna be with him was a breakup. Sorry he didn’t think so....

I point out anything he can work on and it’s well he is not going to until I change. Or he wouldn’t be like this if I wasn’t a bitch. I can’t change how I feel about you being a shitty partner if you don’t do anything to help me then he says it’s my fault that he’s like this. He says I stress too much but doesn’t bother to offer to help take care of the bills we have. He wants to tell me I’m the reason he’s an asshole and he doesn’t care about how I feel tired because I don’t do anything to change how tired I am pregnant. I can’t change jobs. No one wants to hire a pregnant woman to send them on maternity leave in 5 months. I can’t change that I have intern hours on top of a full schedule of work. I’m tired! No I don’t want to go out or do things after work. I worked 12 hours I’m exhausted. Sorry that’s too much for him to understand....

Idk if I should just leave? What’s the point in staying if it’s always my fault and he treats me like I’m not trying when I’m exhausted and he’s only working 32 hours a week while I work 60+