Re: mastic gum and h pylori?

Part of what you are describing sounds like a hiatal hernia. And it does sound like a mild case of acid reflux, which is commonly associated with hiatal hernias.

Stress will increase stomach acid levels, and if some of this is seeping back in to the lower esophagus then it could cause the burning in the lower esophagus, but not the upper esophagus. I have posted on ideas of how to deal with hiatal hernias on here before. It would not hurt to try some of the suggestions just in case there is one present.

As for the stress you need to work on your adrenal glands. The adrenals form your anti-stress hormones to help you adapt to stressful situations. Therefore as you strengthen your adrenals you will find that you are less likely to overreact to stressful situations.