I am experiencing upper left back pain, upper abdominal pain under the left breast, and frequent burping. What could be causing this?
I have had similar symptoms when I have gas in addition to my reflux. When this happens I usually take Simethicone (e.g. Gas-X) and this really helps. But, it's important to know that your symptoms are often found with heart problems as well so you should have that ruled out by a doctor just to be sure. Plus, before taking any medication prescribed or over the counter you should talk to your doctor and let him know all medications you are taking.
Best of Luck - Stephanie
Here are some links you might find useful:
Enjoying Summer Despite Acid Reflux
10 Foods to Avoid with Acid Reflux
5 Drinks to Avoid with Acid Reflux