Sometimes i get nauseous if i don't eat for awhile, why does this happen?

Check Ur blood sugar: Actually, you are getting nauseated, which happens to lots of people when their blood sugar gets too low. You don't want to be nauseous, which means that you are making other people nauseated.

Are you female?: A very common cause of nausea with an empty stomach is pregnancy. Eat a little something every couple of hours and of course do a pregnancy test if there are other signs.