Have not vomited although have feelings like a might, but a constant feeling of fatigue, light headed, and lasts about 1 hour and continue to feel blah through out the day. Has been going on for months and my general practice doctor didn't feel it was serious, just though it might be something going around. Now that this has been a couple of months, and still get these that come on out of nowhere and last a ling while think it is something more to it. Only other symtoms I can think of off hand is a constant twitch in my left eye as well. Not sure if that has anything to do with it either.