How to move forward?

My bf and I got Pregnant while we were just fwb. 

I feel Like we’re always arguing because he thinks he knows who I am But he’s really only known me for a short time. I moved in With him when I was Around 34 weeks pregnant. My LO is almost 5 months. 

I’ve had an extremely hard time postpartum as my delivery was very traumatic and I have Always struggled with anxiety and depression. 

I have a hard time when he talks to me. I always Feel like he’s projecting and assuming and I become Defensive and get upset. My emotions are still intense. Especially on my period. 

And he just thinks I’m immature and I just Don’t know what to do. 

We come from very different families. I come From a broken home, alcoholic father. I was Abused by family and ex boyfriends. I saw abuse. I was always shut up and couldn’t express myself. I was Very very ill most of my life. Dysfunctional family. 

He came from a family with 2 working parents was provided for and loved. Didn’t go through a rough life like I did  

I just Don’t know what to do ... 

I’m in therapy. I’m trying so hard to get myself on the road to recovery and stay consistent. I feel Weak and emotionally exhausted. I feel embarrassed and alone.