Hello,howlingcraneestell, I can understand your frustration. You mention that you have had abdominal surgeries including gallbladder and also mesh insertin for hernias. Your symptoms of pain and fullness in the upper part of the abdomen may indicate slow passage from the stomach into the intestine of your ingested food. This could happen in different circumstances. If you have some scarring at the lower end of the stomach opening from an old healed ulcer , that could cause mild blockage. If you are a diabetic and not well controlled you can have a condition called Gastroparesis that would slow down the stomach. But my best guess in your case, is Adhesions . Especially after multiple abdominal surgeries , scar tissue develops and in some, this can cause kinking of the intestine and cause intermittent blockage or obstruction. If you get relief after passage of gas or after belching , this could be a cause. It is very difficult to identify adhesions but some cases a GI series and a small bowel follow through X-rays can show abnormalities, if there is significant kinking. In some cases mesh itself can cause reaction and scarring with pain. Hope you have had complete blood work. You can discuss these with your doctor and get tested . I wish you well.