Am i wrong

My so and I have been arguing all day. A little back story we had to move in with his parents after I fell I'll last November and lost my job. We just couldn't afford the bills and fell behind. Well his parents asked us to pay rent to help with bills okay no problem. Hers where the argument comes in I'm busting my ass working 80 hours a week so we can move back out while he only works part time like 20 hours a week. That really irritates me along with the fact that his parents want me to pay 1300 a month in rent. Am I wrong for telling him to grow up and tell his parents that is ridiculous as well as get a real job so I can quit killing myself. We have a 3 year old that I never get to see because I have to do it all. I just feel like if I pay 1300 a month to them in rent then we are never going to be able to move. I'm so upset I don't know what to do anymore. Ladies am I overreacting?