Feeling upset confused and fed up

Kylara

So today, my fiance finally got into several arguments. The first one was because I didnt buy his vodka after I put money aside for a car for myself. He flipped out and got upset and angry about it. Later he finally calmed down. Then when I explained to him he needs to buy his own car and I buy mine, he tells me we only need one car. He works in another city that's about an hour or so away so I need to be able to have a car for myself so I dont have to rely on anyone but myself while he isn't home. He then proceeds to tell me that because he made double my paycheck in one week, I dont need to be working. Yet his past shows I should have my own job just in case this one falls through.

Right now, I've made the decision so I dont have to stress anymore while pregnant, I asked his parents if the couch is available for me. They said I can stay as long as I need. (We live across the street from them). I'm up to the point where if he doesn't change how he is for his son that's going to be here in less than 2 months, then I'm over it. I have tried everything to make things work and I am always the bad person in every situation. I've already explained to his parents I found a car and am saving for said car and they are willing to help me check it out so I'm not getting set up for a messed up car that doesn't even run.

Was it wrong of me to finally have enough and go to his parents for help? (My family is too far to help and his parents know I've been trying to make things work.)