Struggling with depression

I'm almost 17 weeks and I'm very happy about my pregnancy but I'm having a lot of problems with my boyfriend. I don't know if it's him stressing over things or trying to accept that his life will soon change. But we constantly fight every single day and I cry every single day. Some days I absolutely feel like dying and I hate my life. I wish that he could understand what I'm going through. We are at such a low point when I feel like we should be at a high point. We're in this together. Sometimes our fights are so bad that he tells me he hates me or that he doesn't love me anymore. I don't know if we're in this shape because of the pregnancy or we truly have grown apart, but it's really stressing me out and I'm sad everyday when I come home. Im so scared that this will continue when the baby is here!