I am relieved to find others with the same symptoms but troubled we have no answers. I have had symptoms of abdominal bloating  most often in the morning (why when there is no food in my stomach), a feeling of the organs (? stomach) occasionally being folded under my ribs only on the left side, intermittent  bouts of heartburn, and the strangest of all - my bra feels too tight as the afternoon and evening progresses. These symptoms seem to be worsening.  I am 63,  of normal weight, exercise regularly, and went gluten free in the last 6 months. also started probiotics which seemed to help the heartburn.  I also have had multiple abdominal surgeries, c-sections, appendectomy as a young child, and major surgery which turned out to be the rupture of an ovarian cyst.