Lost4now,
You need to leave now. Get to a safe place, call the number of the lady. Anytime it gets to violence it is not good. I know you wanted proof that he hit you, but if he's violent it could be worse then a black eye or cut. You need to look after your safety. You need to come first. There is nothing you can do to save him. He has to want to save him self.
We are here for you and you are not alone. reach out to people and they will help.