Is it normal to puke after one small drink

19M So i had been drinking since 16 and i have a pretty high tolerance for alcohol. Got back home today from bar with my friends (I wasn’t drinking because i was a driver) and i made myself a drink like 30ml jäegermeister with cola. And as i took a first sip i really felt sick and wanted to puke. I have now really strong aversion to alcohol. I know that it is natural for a body to fight with such a things but why did i react to that so differently than every time?