what did you smoke it out of?
ive had this happen to me twice..both from a friends bong that only a few people could handle..the first time i felt sick then i puked and my high lasted alot longer than it should have..i suggest righ
the second time i avoided puking but still felt sick and it lasted for a bout 7 hours
if you feel sick after smoking..lay down on your back with your eyes closed for 10-20 mins and you should feel better