Mentally done with this pregnancy

So I think I'm just so done with this pregnancy and rise in my hormones. I've been under so much stress lately and no one is making it better. I'm constantly crying myself to sleep and I feel emotionally exhausted. I'm currently living with my boyfriends family because we have a very tight money situation and they never help us. His younger sister and mother constantly disrespect me (they steal my clothes and talk down to me all the time) and then turn around and act all excited for the baby. Plus his older brother is always at the house and has such an attitude problem with me and constantly harasses my dog. It's to the point where all I do is come home and go straight to my room. All I ever want to do at is sleep and cry because I'm so miserable. I'm not even excited about this pregnancy anymore or having the baby because I know it's gonna be so much more stressful with a newborn and their horrible attitudes. I've tried expressing this to my BF and his family doesn't even care when he tells them how it's making me feel. I literally feel depressed and I can't do anything about it since his family is all we have/know here.