Discomfort in upper middle stomach. eating makes it worse,kinda hurts to deeply inhale. feels like fullness.just gas?

Various causes: Sense of fullness suggests the possibility that you may have a symptomatic hiatal hernia. But any true diagnosis must begin with a medical history and then your answers to specific focused questions, followed by a brief abdominal exam. If your symptoms are persistent see a physician. For more on hiatal hernia see: http://bit.ly/1CZ7ZSW For abdominal pain: http://bit.ly/10RdXop

Many possibilities: Epigastric pain could be caused by gastritis, gallbladder disease, ulcers, irritable bowel etc; You need to see your doctor for evaluation.