I have continued burping, except when sleeping. I have had an endoscopy, colonoscopy, ultrasound, MRI on my Liver, hydrogen breath test & blood test. (I have just ask for a stool sample test today.) My diagnosis was SIBO (with a borderline hydrogen breath test results). My only symptom is continued burping, and some fatigue. No pain, diarrhea, weight loss, etc.as I read most others with SIBO experience. I have taken 2 antibiotics, Cipro & Xifaxen. Taken 2 different probiotics, and digestive enzymes. Eliminated sugars, alcohol and dairy foods. NOTHING has helped. I’m waiting to see my doctor. Can you suggest any other possible causes. Gradual burping symptoms started while traveling in Europe this summer. They were gradual at first, but by February 1st, I was plagued with burping most all the time.