Please help!

So on halloween my boyfriend got super drunk and ended up giving me a black eye and some bruises. We talked it out and since then have been ok. We both haven't drank since halloween except for lastnight, something triggered in my brain and I went CRAZY! I ended up hitting him and screaming and crying. He told me he couldn't be with me anymore but when I got home from work all his stuff is still here. I try'd to call and text him one time and he won't respond. I'm so scared! What should I do?