Before you spend countless dollars and time with doctors who will probably only give you a prescription, please consider that you might need a balancing of your NATURAL DIGESTIVE ENZYMES.
Sometimes ppl don't have enough enzymes and sometimes too much... but taking "digestive enzymes" is a natural fix... and if the problem quits bothering you, that's all it is. If you take the enzymes and still have problems, no harm done
Our bodies need 3 main digestive enzymes. Amylase, protease, lipoase (I think I spelled them correctly, I've posted elsewhere about this.) These enzymes also regulate your esophagus.
If you wish, you can take a tablespoon of apple cider vinegar and if the burn goes away immediately, then you know you don't have enough stomach acid and need the enzymes. But you might also have too much and need them
When we take rolaids or tums or mylanta, that destroys ALL the balance while temporary giving relief...but they cause more trouble the more you take them. I was going through a bottle a week!
I take vegetarian digestive enzyme aid.. from the health food store... it not only stopped my digestive problems but has all but eliminated my aspirating my saliva and at night the stomach acids... because they don't cause me trouble now. When I told my MD what I had discovered, she was like, Of course! I can't believe she let me have this very easily treatable problem and never suggested the enzymes

(And she's a homeopathic MD!)
Trust me... this works.