Need help

Ok quick back story me and my fiance have been together a little over a year and I've known about and been dealing with his drinking problem I thought it was getting better after three weeks ago he almost died from drinking too much fast forward to today we both had places to be today and were going to meet up at the lightrail station (I'm from Arizona) we ended up meeting somewhere else where he was gonna drop off food and head home I was gonna get my insurance and food stamps renewed well anyway I get on the bus and instantly know he's been drinking cause he won't hand me my food I ask him if he wants me to go renew everything or go home with him he says he wants me to go home so we head home together we get home and I eat but am still hungry so I fix myself a bowl of left over chicken he then suddenly realized I hadn't gone to renew anything and started getting upset with me telling me to get on the bus now I tell him no and he gets even more and starts saying stuff like I'm a consumer that I don't contribute anything to the house a lot of bitching later I wasn't really paying attention cause I'm used to his drunken rants when out of nowhere a shoe collides with the side of my head I obviously get mad and he immediately said he hadn't meant to and that he wasn't aiming for my head but was aiming for the wall I don't know what to do anymore his drinking is becoming a real problem in our relationship.

Update I was thinking about going to my parents for a few days but am worried that he tries to kill himself or harm himself in some way

Update 2 my mom won't come get me although I didn't tell her what happened he'll get mad at me and I'm not ready for us to be over

Update 3 he is now accusing me of hiding his 1/5 from him and is still getting mad at me about not going to renew stuff and he just went into the room and slammed the door and told me that I was sleeping on the couch he's still yelling at me but I'm ignoring him