I need opinions.

I am currently pregnant, I am 15 weeks along. I was working when I found out and I had quit because I was staring a new job. My boyfriend has made me very clear he would not like me to work so I let my new job work that I will or he joining them to work. This was when I was 6 weeks. Now I am only currently going to school. It's driving me crazy. I can not taking staying at home much longer. I go to the gym every morning, go to class and come home. He believes working would cause me to much stress. We have gotten in a bit of heated arguments about me working and he has made it clear that he wants to take care me, but I can't take it. I want to get a part time job even if it's okay 20 hours a week. What would you guys suggest?