I had been having severe pain under my ribs and abdominal discomfort for years, especially after eating or exercise. The Dr's. kept checking my gallbladder and all the surrounding areas, but the test kept coming back as normal. It wasn't until I had a CT done with contrast that they were able to locate the problem. I was diagnosed with a rare condition called, celiac artery stenosis secondary to median arcuate ligament compression. If you look up MALS you will see that many of the symptoms mentioned fit the description. It is often missed because it is so rare. Hope this helps someone