in 1979 for obstruction from repeated ulcers and scar tissue forming. The did a vagotomy and took out most of the acid producing cells. I was fine for years until 1996 when I developed another ulcer. A biopsy was taken and a severe bleed ensued requiring two units of blood. Recovered fairly well but have had difficulty with vomiting on and off after eating. Afterward I am hungry again. Vomiting is increased again and weight loss. I still have an appetite. Endoscopy is scheduled. I am scared. What are possibilities I have stomach cancer or esophageal