I cant stand it anymore....

My mom inlaw dad inlaw (not really him) and their 25 year old daughter are bringing me to a breaking point. We have to live with them because we are so broke and have so many medical bills we are paying on its ridiculous. We want to move out so bad... that was the goal till we got a letter from a law firm that will take us to court if they dont get money within 30 days. So the money we where saving to move out has to go to the law firm. My mother inlaw keeps treating me like shit. Constantly belittling me, making me feel like my voice doesnt matter. I'm almost 16 weeks pregnant with a 2 year old. My son loves his grandma so much but she gets so annoyed with him and she yells at me because she doesnt want to be around him. Her daughter doesnt give a rats ass about anything. It takes forever for my son to go to sleep and she deliberately is loud slams doors and stomps on the floor. Her dog isnt trained at all. He barks all night long it scares my son so much that he cries so uncontrollably he gets sick and then refuses to go to sleep because hes terrified. She blames my son for overreacting. Hes 2 and has autism. She doesnt care about anybody but herself. It's called sensory overload!!!! He cant control that!!! He cant talk!! He cant tell us what's wrong and she yells at me and says it's my fault that I didnt teach him better!!! My mom inlaw of course doesnt step in or anything because her daughter yells at her and treats her just as bad. I know she doesnt care about me neither of them do. They dont even want me in the family. If they had a choice I wouldnt be here. My mom inlaw wants us out but I dont see her trying to help pay off our debt. I cook and do almost all the damn cleaning. No one does anything in the family. The house is disgusting! If I forget say a cracker on the flood I get yelled at and ridiculed. My husband doesnt want to step in because everytime he has he gets yelled at and told he better move us out or else. Or else what?? Just let us be homeless with a child and me being pregnant!! We make enough money to support us but we dont want to end up filling out for bankruptcy because if we had our own place right now we wouldnt be able to pay off these bills. My family wont even talk to me and my parents live out of state... I'm sorry for the rant...