I have been having upper abdominal tightness, bloating, fullness, seems to be caused by movement.Feels like a muscle tightening right in the center of upper abdomen. Also more indigestion, nausea, and what i believe is acid re flux I experience when I try to lie down to soon after eating or even a few swallows of water. Doc has tried me on acid reducing meds which didn't change anything after 6 weeks I stopped taking them. I also have been diagnosed with fibromyalgia, about 6 yrs ago. The upper abdomen symptoms are newer, about 9 mths now. The nausea and re flux symptoms are much more frequent. 51 yr