Symptoms a year ago... Bloating, sometimes ab pain, fatigue, nauseous, forceful belching, half dark brown and half white stool in a twist or like a hot dog on a bun. As well as headaches, heart palpitations, pounding heart and sweats after eating. Biopsy was done in my small intestine which determined I had first stage celiac. The last of my symptoms have gone since I started eating a no gluten diet, but I still have all the other issues. Since my new diet I ve witnessed other unusual things like stool looking like crunchy peanut butter or solid stool with colored pieces (green, red..) or somewhat flat stool and often fuzzy looking. I poop almost every day but when I start forcefully belching and not much farting then I know a problem is coming and soon after ab pain and fatigue and joint pain. This has been the case these last two weeks. My bowel moved a lot today finally and after a few feet the last of it looked fairly flat. My vitamin D was low when checked 6 months ago. Im taking vitamin D prescribed now. I want to ask for a colonoscopy for piece of mind but I m not 50 yet.