Did I drink too much?

(22F here) I’m not a regular drinker, I drink about once a month. I’ve been going through some rough shit lately, so I wanted to get drunk last night. I drank an entire bottle of vodka, which was 85° proof and 375ml (13.2 oz) over the time span of 2 hours and I ate some Nutella, and I didn’t drink any water or other fluids. I woke up and had the worst hangover ever. It was terrible. I even threw up once (not very much though). It was really a horrible experience today. I’m still feeling uncomfortable and I just wanna get some sleep. Wtf? I’ve never felt this before. I don’t usually get hangovers. Maybe I drank too much yesterday?