After a night of drinking, i cant drink again for ages?

Ill start off by saying i dont drink much. Maybe once or twice a month, but if i do its alot. The last few months though ive noticed i cant drink more than 1 day in a row. I had alot of vodka on Friday, about 500ml in 5/6 hours, too much i know but still happens with lower doses too. Since then i cant drink anything, tried yesterday had a sip and got sick. Tried today again and didnt get sick but wasnt far off. This happens with most alcoholic beverages…wine, beer, stout, etc. In general i try do the best i can while drinking. For example food before and after, alot of water in between, but still cant handle it much after the night.

Anyone else experience this? Anyone got any tips? This can happen after a shot or 2 aswell. Last month i had 4 shots on a night out. For the next week i couldnt drink anymore alcohol.