Needing unbiased advice please

I'm at that point where I need to decide if I am going to stay in an unhappy relationship or leave. My SO refuses to compromise and continues to act selfishly. I've talked/fought almost every weekend about needing more attention from him. We both eork full time, and when the weekend rolls around, he sits on the couch and plays video games and does online betting. The gambling affects his mood when he doesnt do well. I understand that as a pregnant woman, i am extremely hormonal and sensitive. Ive told him plainly i need more attention and for us to do things outside the house as a couple. Last weekend he told me he wasnt attracted to me because I dont take care of myself and I'm lazy. I work extremely hard in both my personal and professional life and he later apologized but its been hard to forget. This weekend, i asked for us to go to a movie and he said absolutely not. We havent done anything as a couple in over two months. I realize he isnt going to change, but leaving him is the hardest thing I'll ever have to do. I feel so guilty for leaving the father of my child but my needs aren't being met in this relationship. I'm going to talk to my mom tomorrow, but I'm really just wanting some unbiased advice.