yeah, that's the ulcer bug, well, it can cause ulcers. But it can cause gastric spasms that can be felt anywhere, but one of the definitive signs of that is a non-acid reflux.. ie, you throw up a clear fluid with no stomach acid.

Although, H.Pylori isn't the only thing that can cause gastric spasms, it is one of the main things that can. [that doesn't show other more alarming symptoms] and is easily treatable.