my mom :(

So I'm 19 and just found out I'm pregnant. My boyfriend and I have had some issues in the past, and my parents still haven't gotten over it (or my oldest brother). My mom is being so negative about the whole thing. I still live at home, as does my boyfriend. She asked what we're going to do and I said that he would get a better job and get us somewhere to live hopefully. And she's just saying that I need to live at home, and that he doesn't need to be in the picture. She thinks that it would be okay for him to only visit. That is 100% not okay with me. Does anybody have any advice for this kind of situation? I'm afraid all the stress is going to cause me to lose the baby or cause some kind of issues with my pregnancy. I'm also scared to death to tell my brother. My whole family just seems so judgmental and unsupportive. Someone please just tell me that everything is going to be okay 😔