I didn't have an infection in my gallbladder. Instead, the gallbladder was failing. There can be a genetic component to gallbladder problems (my dad and 3 of my grandparents had their gallbladder removed). For women, pregnancy or being on hormone birth control can be a cause of gallbladder attacks. Rapid or substantial weight loss can also be a cause of gallbladder attacks. My family history and being on hormone birth control should have been a clue to my gastroenterologist. The GERD diagnosis didn't make sense because I could, at times, eat GERD trigger foods and have no reaction. I was given the h-pylori test and the result was negative. As the vast majority of reflux is caused by that bacteria, a negative test result should have been an additional clue to my doctor that it was an incorrect diagnosis.
As the years went by, my pain stopped being diffuse and, instead, hurt in my upper right abdominal quadrant and directly behind that in my back. It also sometimes radiated into my shoulder blade. I had a nightmare gallbladder attack one night at a wedding when I ate shrimp scampi. My attacks involved intense nausea and a loose stomach. Some attacks also caused vomitting.