My brother just put his hands on me, what should I do?

We've never got this heated before ever and I don't know how to feel, I'm traumatized. I've never been hit by a man before and my brother does this. All this started because he didn't have the keys and he was banging on the house door and I didn't hear it so I guess he got impatient. So when I heard the dogs barking I went to the front door and he's banging like a mad man so I yell "hold the fuck up" that's how we talk to eachother, I unlock the door and he flings it open hitting me with the door. I'm pissed so I shoved him and he throws his water in my face so obviously I get more pissed and were shoving eachother. Then I get to my room and I push him again and he grabs me by my neck and pushes me and I fall on the floor. I was shocked and scared. Like I don't know what to think, and I just need to vent to someone. I'm in my room now and I've called my parents because neither of them were here.
My brother just put his hands on me, what should I do?
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