What should I do? Is my marriage un fixable?

[Sarah E]

I have been married for a year on the 22nd of this month. It hasn't been a pleasant experience, but I know that I haven't been happy for a while and I am fairly certain that he is not happy either. We had our first child a month after we got married and our next child is due in the middle of May this year. He has had problems keeping a job since we got married. He will work for a month or two and get fired for something that "is not his fault" and then he will be unemployed for a month or more and then find a job and the cycle starts all over. In January he got fired and I decided that it was best for me to find a job, even though I was six months pregnant. Now I am stuck working full time, going to school full time, coming home cooking and cleaning, doing laundry, and everything else while he watches T.V. I understand that he has problems with jobs because of some of the things his mom did to him when he was a child, but should I even try to work out my differences with him?