I Want To Quit

I want to quit my job. It's part time and I do not qualify for maternity leave. Also live in a right to work state which means they could fire me for absolutely no reason if they want. Since I don't qualify for leave I have to quit and I'm not guaranteed to get it back after the baby is born and I'm ready to work again. I'm 12 weeks pregnant and miserable!! I'm sick and so tired and achey and knowing that I don't have a future at this job makes me despise going in. The money is ok and it helps a little but I just don't know what to do. I'm scared to talk to my fiancé about it. I don't want it to look like I don't want to do anything at all. I don't want to seem like a bum. 😫 Any advice?