Which are the symptoms of helicobacter pylori?

Hello again,

I would like to know what are the main symptoms of helicobacter pylori?

I have done all the appropriate tests, endoscopy, phmetry, impedance test, manometry, barium but I was never tested for helicobacter pylori.

I don't know why the first doctor who did the endoscopy did not take any biopsy for helicobacter pylori.
I haven't mention that to my second GI. I am going to do on my next appointment after christmas

I have noticed that I have belching on empty stomach, burping after drinking water, excessive and foamy saliva, and strange stomach gurgling. I don't have pain or bloating.

I was wondering if helicoabater pylori may cause severe reflux or only gastritis?

Mary