plz help. I'm scared

Am

my bf just choked me and I'm so scared to leave. I have my stuff that's not all packed so I don't have a quick get away. a girl called his phone and I answered she said she's his gf and has been for a year and we've been together almost 2 years. he got really drunk and I woke him up bc the girl wanted me to and that's when he attacked me. my head hurts and my neck. I'm in another state at a hotel with him. what can I do so he won't attack me again?