I'm male 16 years old and sometimes I go on for a full 2 days without being hungry and with the feeling that if I eat something im going to puke. I dont have much pain in my stomach except for a few grumbles now and than with a small pain. I work 40 hours a week could this be stress related? I dont feel stressed but possibly I am? And also when I am hungry I tend to eat about half the pantry and most of whats in the fridge. I am not at all overweight and I'd have to say im in better shape than most kids my age so I think something strange is going on here someone gimme some advice please.