I need some real advice from grown women.

What do I do if I love someone more than words can express and emotions can feel. The father of my soon to be son. He's a hardworking man, who tries his best to work 10-12 hour shifts 6 days a week to support us and our baby financially. But he does not support me emotionally. I feel unappreciated, and unattractive. Anything remotely small I do he gets mad at me. And I always know it's coming. But there is times he occasionally realizes that he took it far and he apologizes. But not all the time. He favorite thing to say is "you're in the wrong". But remember, there is many reasons why I do love him, and he does remember to make me happy at times. But lately it's just been so unhappy, and I've been working so hard on our relationship. I don't know if it's cause he's young and stressed about the baby, or he's just tired of me. Do I keep going and "wait" until the baby is here, or do I break it off before the baby comes? I love him more than anything and it completely TEARS me apart to think of a life without him by my side- by I can't even talk to him about the way I feel without him getting upset. I'm at a stand still. Cause I cannot communicate with him, and because of that It makes me unhappy. Please women of wisdom reach out to me!