almost 29 weeks and depressed

it seems like the closer I get to my due date the more depressed I'm getting. I'm already struggling financially, I'm the only one that works in our household and my job doesn't pay maternity leave so every month im already worried I won't be able to come up with rent or something will gey cut off. my SO is bipolar and unmedicated so jobs don't last long with him cause he just gets mad and quits. lately he's also been having alot of bad days so we haven't really talked. id rather just avoid a argument. but I'm feeling more and more stressed with no one to talk to. I already feel like a single parent knowing he can get mad at anytime and leave me. its sucks having to work even days when I feel like death and just want to stay in bed since I have the only income. talking to him about it doesn't help because then he gets stressed and everything comes down on me. I thought about talking to my doctor but idk what good that'll do. I'm pretty much lost right now looking for a way to continue on...