Excessive vomiting after drinking tiny amount

Okay so im 22F and tbh Ive never been a drinker in my life before until I turned around 18 and casually I’d have some drinks with friends. I realised that even after having just one or two drinks of liquor (mixed with some sort of juice or soda) would give me a terrible headache 2.5 hours or so after consumption. The next morning I’d be throwing up for HOURS to the point where I’m physically weak and I feel nauseous up to a week and a half after

Before anyone says it, yes I drunk enough water between drinks and ate full meals before drinking.

I stopped drinking cold turkey after like a year and a few months ago I went out with friends and I took one shot (bare in mind we had suspicions the restaurant probably diluted the alcohol with water anyway. Just off one shot the next morning I vomited for hours and again, I was nauseous for like a week and a half.

Has this happened to anyone else ? Is it alcohol intolerance , an allergy or is it a something else