Drink only water with meals & nothing else.
Do you have also any of the following symptoms. Yeast infections? Rough dry places on feet? Nail infections? Blistering in your mouth? Bleeding gums? Dry cracking lips? Jock itch? Splitting nails?
If your belching & have yeast infection symptoms do this. Buy apple cider vinegar. In morning place 1 T. of vinegar in 3 oz warm water & gargle over n over. Then rinse with clear water. Make another batch, however, sip this one & swallow it. Do this 2 to 4 days in a row.
Within 24 hours you will feel queezy in your stomach. In 2 to 4 days your urine will get dark and kinda lumping thicker. The yeasts outer membraine will collapse & the PH balance change will kill it.
The dying yeast makes your stomach queezy. Within 5 days the yeast will be under control & your belching will stop.
If you also have foot infections, TRIM NAILS then take a pail or large bowel. Fill enough water to soak a foot with warm water & 3 oz of vinegar. Use one batch for each foot & soak each 5 minutes or more. Rinse off.
Yeast infections are a major cause of immune system getting weak & allowing other disease to attack you. We all have yeast inside us. Some people get weakened & it starts growing & migrating in us.
Apple cider vinegar will help bring it under control.
I have the same problem. I had endoscopy done nothig showed up. Coffee and milk make it bad .