(posted this as an answer to another question but mostly works here.)
took me years to figure out what my prob was: thought it was chest pain
, thought it was my lungs at first, then when it got bad i thought i was having a heart attack
. then it got REALLY bad and i realized that i could feel everything (food, spit) going down slowly and painfully. (after the initial feeling of "pill stuck in throat.")
then i heard - on "scrubs" no less - "what are the 5 main causes of chest pain?" one of them was gastro esophageal spasms! aha! started paying attention to when i get them. RED WINE PAIRED WITH CHOCOLATE SEEMS TO MAKE IT WORSE. CERTAIN MEDICATIONS SEEM TO MAKE IT WORSE. (just cuz the docs think you should take it doesn't mean your stomach thinks the same!) had it bad after dental work, thought it was my lungs from drilling dust, but it was this from the pain meds!
incidentally, you doctors should be ashamed of yourselves, suggesting painful and expensive tests and more drugs, when changing what and how you eat is such an obvious solution. FOOD ALLERGIES
AND ALLERGIES TO AIRBORNE TOXINS, MOLD, DUST, POLLEN, ETC ARE A HUGE PROBLEM. AS IS DOCTORS PRESCRIBING PILLS LIKE CANDY...