My boyfriend is abusive and I don't know what to do.

I have been with my boyfriend for 7 months now. When I first met him I saw no signs of anger or anything along those lines. A few months ago I tried to leave him because we were on a "break" and he lied to me about going somewhere when in reality he went to a girls house. When I tried to leave him he went outside and threw trash cans everywhere and then ran up the step and started choking me. He let go and told me he just wanted me to shut up. I told him he was crazy and he started choking me again. I screamed for my mother and he ran away. He came back a few days later and it seemed he was sorry. Well now here I am crying for help.
My family and I are moving and my boyfriend helped me carry things to the new house. We were arguing the whole day ( just 2 days ago) all because I wanted to come home and relax and he wanted me to drive somewhere. Well we go to the house and I tell him I think it's best if we part ways. That didn't go so well. He started coming at me so I fell to the floor. He told me to get up multiple times and I said "no!" He grabs me and slams me against the wall. At that point I was terrified because we were the only ones in the house. He threw my phone so I couldn't call the police. I was screaming and yelling at him so he flips me over on to the floor and gets on top and chokes me to the point I was losing breath so I scratched his face and he got off me. I tried running for the door but he pushed me and said I wasn't leaving there alive. I was so scared and am still scared. He said he snapped out of it and began to cry and say how sorry he is.
I haven't left him yet because I'm afraid I will die. My little brother also has a strong bond with him and I can't bring myself to hurt my little brother but it is to the point where my life is in danger.Calling the police would do nothing because they would never find him. I don't know if anyone will read this but I hope someone does. I need advice!