Help don't know what to do

Celeste
I am a week away from being nine months pregnant. My brother is mentally ill and is constantly going manic threatening to kill me and being violent towards me. Today he had come home from school, he wanted to clean for my moms birthday. He had turned on his music that was way too loud and I got a phone call from my obgyn talking about my delivery day. I asked him if he could turn it down and he started cursing me out threatened me and I was alone with him at the time. I immediately called my husband thank God he had pulled up. He came in and had to defend me. My mom ofcourse turned the situation around me telling me that he lives there and that I shouldn't be coming in her home acting like that and that it doesn't matter that I am nine months pregnant! I am so done with my family. And I am scared for me and my childs life because of him.