Depression..

So this is prob ganna be long. But I need to get it out. I feel so alone, worthless, tired, numb. I am home alone pretty much 24/7. My boyfriend hangs out with his friends and I just sit at home and wait for him.. I'm so depressed I don't even wanna be here anymore.. if I wasn't 5.5 months pregnant I don't think I would be here.. iv been so tempted lately to self harm.. but I'm trying to think of my baby... I have no one to talk to and nothing to do.. my boyfriends response to my depression is "well you just need to change and be happy" which makes me feel even more defeated... I don't know what to do anymore. Iv never been so depressed. And my anxiety is through the roof. I feel like I can't breathe.. I feel so stuck... how do I get through this?