Can someone help me?

My boyfriend and I are currently pregnant with our Babygirl. We been together for 1 year but we grew up together since kids.. for the past year I been nothing but supportive and trying my best to help him etc.. well, things got worse and he just gets smart with me and he is a smart ass and he just cusses a lot etc.. I try to communicate with him but he just ignores me and he acts like a child when he gets angry. Literally everything ticks him off instantly .. his grandma passed a few months ago and he says he is hurt from it so that’s why he acts like that.. but last night he told me I remind him sooooo much of her in many ways & I do stuff that she used to do etc (in a good way) but he told me it hurts him And it makes me angry etc and that’s why he is like that with me almost everyday.. but now I’m feeling like I don’t wanna stay with someone who hurts me everyday because I’m a reminder to them of someone they lost.. and I’m tired of him treating me a way.. he changed and he talks to a therapist but I’m so hurt I been dealing with stuff for a year.. what should I do?

EDIT: i also do see a therapist every week. I get help for myself and he started getting help for himself.. but I’m just drained from one year of constant stuff .. he lied about almost everything and so much stuff in our relationship and i just found out and I just feel so different .. like I’m numb from everything