Hi I am on Lansaprazole for mild Barrett's Esophogus 4 yrs now and am a female aged 50. I have high cortisol levels for at least 2 yrs as well which may be causing changes to stomach acid levels.
I also have Celiac disease now controlled 4 1/2 yrs via GF diet.

I have frequent belching, even between meals with no heartburn, and normal stools. What could likely cause this? Could my stomach acid be too low, and how can I have it tested?

I am concerned about being on PPI for so long.