Hi. Thanks for your query and an elucidate history. You have a classical history of fluttering feeling pressure in the upper abdomen after eating since two months, and this gets relieved when you stand up or lye down. This is difficult to explain in presence of normal ultrasonography, blood work and scope. The most probable causes are: You may be over-eating You may be obese There is a possibility of sub-acute intestinal obstruction in the proximal part of the small intestine or rare problems like annular pancreas or so. To get the diagnosis confirmed or rules out I would advise you the following: Barium studies in the form of enteroclysis and CT scan of the abdomen. If these too are normal, you can follow the advise: Eat small frequent meals Avoid all the foods and beverages which enhance your problems.