Advise please! Boyfriend's mom. Long post

How would you guys feel or do when you have been with someone for over a year and there mother has moved in for a couple months and waiting on her place should be a week or two before she get it. It's been hell since she has been here! She drinks and has always tried taken control and has said every disrespectful thing to me in the book and I almost left and was done bcs of it. She apologized and it was good up until yesterday. Good but she wasn't talking reckless. Yesterday her son trys to express his feelings and she flipped shit was talking reckless and came into our room and talking shit and as she's walking out saying to him "and she won't be here for you either" so I'm calm as hell cause I'm 21 weeks pregnant and I'm going to close my door and as I'm closing it I'm like I'm always going to be here and she turns around comes back in points her finger in my face and says I'm a wack bitch and I'm like okay I'm wack but been paying for everything in this house while you do nothing. Still calm. So my boyfriend is already pissed cause there argument and freaks out on me for Saying something back to "his mom" sum it up he comes back calm and talks to me apologise and I tell him I will not live in this house anymore with her IDC how long it is. Idc who she is I'm done being disrespected like that and been dealing with it for so long. I've had enough. She calls him today to talk and she's sorry and was upset and will talk to me when she gets back. I look at him and I tell him I wasn't joking I'm not living here with her anymore. He looks at me says okay and doesn't wanna finish the conversation. Now I'm just hurt ASF cause ik he's going to let her still live here no matter what she is causing and doing and he apologizes for it but won't kick her out. Cause it's his mom! Im hurt ASF cause I feel like he doesn't give two shits about our relationship and she manipulates him so ik she did during that phone call to where "she's sorry and everything is okay" but it's fucking not and I'm tired of feeling like he just will let it go and move on and she stays here while I'm hurt and broken cause I don't feel like he sticks up for me as his woman or our relationship and family. Advise and especially what and how would you guys feel!! Sorry very long. But I need advice.