Definitely get a stomach biopsy. For me, I find eating big heavy meals, I have such a bad and immediate reaction. I find drinking warm herbal tea or water, just before mealtimes to settle the acid. I take serious notice of what ingredients I cannot have. For instance, I can eat corn on the cob but I can't eat cornmeal. I drink ginger or lemonade after mealtimes to help digesting. In worse cases, I take my pills with Gaviscon.

I have been taking Omeperazole daily for 10 yrs. Tell your dr u need an egd. To see what's going on.

Recently had an endoscopy for worsening problems with food getting stuck in esophagus. He said he felt resistance getting the scope down. Biopsy showed GERD. Put me on prescription Omeprazole (prilosec) and while I don’t lije taking anything it has helped tremendously and I feel better having ruled out Barrett’s Esophagus or anything more serious.

You check your urine and saliva. You can do that with a paper strip that will measure your Ph level. I got mine from a company that I use, but I don't know if can write the name of it here.
Than I take supplements to correct it.

Me too but i have no idea how to fix the GERD/esophagus narrowing without the omeprazole. Has been happening on and off for 30 years and diet, times that I eat, etc have not changed it.