I have that exact pain...and I have GERD(acid reflux). I also get nausea and stomach pain occasionally. I take prilosec....antacids like tums and malox do nothing for me. Now I get a lump feeling in my throat sometimes. I have to go get an ediscopy where they put a tube in your stomach and see if you have ulcers etc.
I would see your Dr. before it gets worse
Avoid caffiene, chocolate, fatty greasy foods, and don't lay down for at least three hours after you eat. Also eat smaller meals. Those are suggestions for GERD sufferers.
Good luck