Overwhelmed

I'm 31 weeks and 4 days. The transmission blew on my only car yesterday and when my boyfriend when to a dealership to try and get a new car for us they denied him even with a cosigner and $3000 down... so not only am I still carless but now he's in a really bad mood. Saying things like I deserve better than him and he hates himself as a person, that he isn't mature or responsible. Then he said 6 months ago he thought he was doing great but since then everything has gone down hill... when I got pregnant. He didn't say it was when I got pregnant but how could I not take that personal? He keeps saying I'm going to get tired of him and leave but I really feel it's going to be the other way around... I don't know what to do.. I'm so confused and scared. If he doesn't want to be with me I'll have nothing and no where to go.... this is all too much....