I'm at a loss...need advice

Me and my so got pregnant within the first month we were together, baby is now 7 months old.

When we first got together I felt like the relationship was great, we talked openly, showed affection all the time, we never really fought of course we had disagreements. Fast forward to when baby was one month old, we lived in a trailer that was a fire hazard and landlord wouldn't fix anything so we moved in with family (my aunt) she kicked us out on the street to live in our car a week later, since then we have moved four times. I know this causes stress and money is a huge issue for us but our relationship has since spiraled out of control. We are no longer able to talk about anything without raising our voices, he has told me to leave but he won't let me take my baby because I'm "unfit" ( I'm the babies main caregiver). In the last week things on his end have gotten worse. We can't talk about bills because he tells me I control everything, he blows up at me when I try to talk to him about anything other than the weather. When he comes home from work he doesn't pay attention to the baby ( baby doesn't even smile at him anymore), he told me a week ago after we had a big fight and he left and went to the bar ( which he's never done) that he was done drinking because it just causes problems but has drank everyday since. I don't have any family left or friends to talk to, him and the baby are literally all I have left. He has always hidden his phone this whole relationship as well, I've never looked at it because I want to trust him.

I feel like this post is all over the place but if you can make sense of it and give me some advice that would be great.