I feel like i’m failing at everything..

I have a 2 year old son, and i’m pregnant with my second child at 29weeks. I’m due in february and have been dying to go back to work. I’ve applied to over 15+ places almost everything in town that doesnt need some kind of certification or anything. We’re living paycheck to paycheck, with only my fiances income. I’m stressing out so bad, because we were doing so good when i was working. I had to quit because we moved to another state.. We have to pay back his brother for helping us get some stuff when we moved it’s hard because we don’t exactly have the money to pay him back. I’m going to apply for WIC and hopefully they can help out with some stuff. I had another interview today and just felt so depressed that i almost cried in the car right afterwards.. i just don’t even know what to do anymore, i just want to break down and cry but i dont want my fiancé to know.