When I woke up in early morning my stomatch pains as feel hungry what are the reason for this?

Stomach pains. There are many many causes of stomach pain.From being hungry to having an ulcer to being constipated to having cramps from diarrhea, etc., etc...Persistant stomach pain lasting days or severe stomach pain that brings you to your knees , should and must be evaluated by a physician.Once a diagnosis is made, a cure can be possible.