So sorry to read what you’re going through. My husband was just diagnosed with CG. He also has microscopic collagenous colitis. Which is causing the diarrhea, and weight loss his dr prescribed lomtil to control the runs, and budesonide for the colon he takes sucralffate for CG. It’s all so overwhelming. Get the tests done. Once you know you can start a management program. He also changed his diet, that really helps