The fact that it's only happening after you eat would lead me to believe acid reflux.
Just for the heck of it, and to quench my curiosity, try drinking a tablespoon of Apple Cider Vinegar (not the other kind) in a glass of water and see what happens. Come back and let me know.
Hi the opinion of some health professionals is that vinegar makes the body too acidic. Apple cider is the same acetic acid as white vinegar. It might contribute to heartburn sometimes instead of helping it in my opinion.
A good drink of water though might be more useful.
Hi Suferembarrassed I know it was said that it was thought there is no acid reflux. Some people do have hypochoridia which is a condition of low stomach acid. This condition might be relieved by a lemon and maybe salt, since it contains the chloride ion.
However if there is another problem then that might not help.
In order to fix the problem the true cause must be found. Once the cause is found then the problem may or may not be fixed depending on what it is.
Have you seen a GI Dr. to get some upper GI tests done? Many times trying to self diagnose yourself isn't the best idea. You can try many different things, but many may not work if you are not treating the REAL problem.
When you come to the end of your rope..tie a knot and hang on!