What do you do when an ex couple who are both on felony probation deal with domestic violence?

My ex boyfriend yells at me, curses at me, calls me names, jumps on me, s me, threatens to hurt me, threatens to kill me, sends me hurtful texts and messages, uses me, slanders me, and rallies up his neighbors, family, and friends against me to lie on me and make fun of me. And threatens me to get locked up just because I am on probation. He tells me that I can get locked up because 2 felons are not supposed to be together. I don't know if it is true or not. I am new on probation. Why do I keep staying with him? I have nowhere to live. He knows that, and he feels entitled to abuse me and force me into . Then, he brags to me about using his psychiatric ailments to get away with things. I have went to and have called domestic violence shelters for help for my situation with my ex and have went to my probation officer for help with a place to stay. But I am left with no help. I feel am afraid to call the police. What do I do? I feel sad and hopeless. He treats me like a sad and worthless animal. That's how he makes me feel.