Im honestly crying

The other day my moms boyfriend was pissed. He was throwing shit. He almost hit me with his xbox. (im also pregnant) I told him he almost hit me he didnt care. While he was trowing stuff he threw my monitor. Even though im young I wanted my daughter to have nice things i never did. This monitor was expensive i absolutely adored it. Now it shocks me and the battery won't stay in. My mom said tape it. He gets away with breaking my stuff? I dont have the budget to buy another. Then he told me child services was going to take my child away because i dont clean after my brothers. Guys i chase a toddler around everyday thats not even mine and i dont get payed even though he said hed pay me!We are also in a 2 bedroom for 5 people that has no dressers or any storage to put things. How am i supposed to keep it clean? Its his house too so why cant he help if he wants it clean? I pointed this out and he said i was making excuses and blaming other people. All my items are in a corner. I didnt even want to live here i was forced. Now he went and bought my brothers food...i feel whiney but i want some too. Why do i get treated like shit?

Update

Jennel: No i tried talking to my mom about moving out she told me no. They wont let me move out. I didnt live with them prior to pregnancy but once i got pregnant i was forced by them to live here.

Update: im not 18 yet. They wont let me leave. Me and my mom was supposed to move into a bigger place just us my brothers and my baby and i agreed too 1/3 of the rent and 100 for utilities. She told me i had to live with her while we find a place. She forced me i had no choice now it months later and every place i find she says shell contact and never does.