Throughout my adult life, probably only 1 to 2 times a year, I get vomiting, it's asthough the stomach muscles are fluxuating, dry heaves untill theres nothing left in my stomach. I'm careful what I eat, it's not the stomach flu. Being it was only a couple times a year, I ignored it. But this year it's happened @ 5 times. I don't know what brings it on.