immediate hangover or intolerance?

Had 2 glasses of wine between 6pm-10pm & at 3 am vomited after shivering and feeling dizzy. Feeling fine the following morning.

I thought it was food poisoning due to the severity but now I’m wondering if it was just a hangover?

Did drink plenty of water and ate well / snacked after. Really odd!

There’s times when I’ve done a shot or two and feel fine, but I do recall several times where a small amt (1-2 drinks) of alcohol made me vomit whereas larger amts (4-7 drinks) just gave me pounding headaches.

Would love any thoughts! Might be limiting myself to 0-1 glasses or wine at fancy occasions now hahah. I don’t remember ever having trouble with wine before…