I get nauseated and vomit after drinking ice cold drinks why?

No Ice For You!! Take the tequila out of those margaritas and you'll do fine.Or,rum out of those daiquiris?Short of that,or maybe quinine in tonic or a host of other ingredients you may be sensitive to-let's assume it happens just with ice water(and it's not from the Ganges),then you may be having what's called a"vagal"response from the back of your throat.It's a nerve that, when pissed off,can make life miserable.