A discomfort feeling in stomach, what could this be?

Get evaluated please: It's normal to be concerned about your health, and to worry why you feel bad. The possibilities are numerous--ranging from acid reflux (i.e., heartburn) or a peptic ulcer to pancreatic or biliary disease & even stress. Alarm signs include weight loss, bleeding, recurrent vomiting, significant tenderness. Whatever the cause, you're appropriately anxious about it and should seek help from a doctor.