I've been seeing doctor after doctor for this, and no one can find what I have. The first time I suffered from this it manifested itself this way: light pain or tenderness on the liver side, and the center of the abdomen and indigestion, slow digestion &, acidity. Then my stools began to turn light. (Sorry about this, but I don't know how to more delicately phrase it). My skin turned yellow. Eating would bring on palpitations, a feeling of swelling in my throat, and pressure behind the eyes. Eating anything only served to worsen the symptoms but not eating was bad, and drinking water aggravated them as well.
I went to a gastroenterologist, who did a test to determine speed with which the gallbladder worked, and it worked extremely slow but he didn't recommend getting it out.
I continued to have these "attacks." Sometimes they last 30 minutes, sometimes a week. I recently went to a different gastroenterologist (I had moved location) and he did a colonoscopy, gastroscopy, ultrasound of the abdomen and blood tests. He found a small hiatal hernia and fatty liver, no stones in the gallbladder.
I continue to have the symptoms. I've gone as far as believing that I have heart disease, pancreatic who-knows-what, and other illnesses, since they can't find a reason I'm having all these symptoms. I'm very depressed about not being diagnosed at all. The symptoms are not my imagination. If anyone has any advise, or has gone through this, please let me know.