Hi Kerrie,
You need to get out of this relationship. Your life is too precious. I understand that you may be scared to leave him, but you can't live your life like this. I would suggest trying to talk to a counselor or a doctor or even the police about your boyfriend. Tell them that you want to leave, but you are afraid to do it alone. I'm sure that they will help you get away from him safely.
Good luck and really wishing you all the best.
Take care,
Talico33