My problem is virtually identical. It hasn't caused any stomach pain really. I feel pain more like in the chest. When it isn't pain it's a really bad ache. Nexium doesn't help. And after an endoscopy, it turns out I have duodenal ulcers. But ulcers are caused pirmarily by two things. Either, over use of nsaid(non-steroidal anti-inflammatory drugs), i.E. Aspirin, ibuprofen, etc. Or, bacteria known as h.Pylori. The doc said my ulcers were dueto neither. The only thing he suggested was nexium, which I took the first time this happened. They had the same effect this time. I get a sharp pain up the side of my esophagus up to the throat. So I stopped taking it. I'm afraid to eat so I eat vey little now, and in a matter of 2 months, i've lost about 30lbs. The relief after burping is the biggest thing. And taking the gas-x did seem to make it a little worse. I hope you get well soon. And I hope you can hold on til you do. I also suffer from anxiety and it definately doesn't help. Good luck.