I've had stomach pains and nausea for months on end now, im only 16 and whatever food i eat makes me want to vomit but i am never able to. Even if i eat small amounts of food i get the same feeling and sometimes diarrheoa or constipation. I wnt to the doctors before and he told me i had stomach mutation but recently its gotten worse and i was unable to eat for at keast 4-5 days, i just kept hydrated. Can anyone tell me what it is?