No matter what I eat or how much I eat I get nauseated. I had gastric bypass surgery 18 months ago. What could be causing my nausea?
Gallstones or ulcer. Nausea after gastric bypass is not normal. Most common is small stones or sludge in gallbladder. Also consider ulcer (must avoid aspirins and tobacco). Less common might include bowel obstruction, medication-related, and constipation. Of course, you will need to see your doctor about this. Good luck.