Tummy troubbles??!

Tummy troubbles??

I have been having troubbles with my tummy for over a year now. I don't actually throw up.. I just get this feeling in my stomach, like a hungry feeling almost.. it's not hunger though, it sort of feel's like a sore on the inside of my stomach. sometimes it feels better after I burp, but only for a short time. right now it is bothering me.. it sort of feel's neausiating also.. and flippy.. but I have been for many of tests, including upper g.i series, blood work, ultrasound. Nothing has come of these tests.. I am glad I don't have any hernia, gall bladder or ulcer problems.. but I want to be able to fix this.. any idea's of what this could be? it happens out of the blue sometimes.. not every day.. but like right now.. for no aparent reason. I don't think it's linked to any specific food either.
Any advice would be greatly appreciated.

3 weeks ago
It is not a heartburn feeling, and yes I have been tested for h. pylori. Thank you though!!

keep a journal of what you eat and when you feel this way. I know you dont think its something you are eating but i bet it is. my son went through the same thing all kinds of tests with drs and nothing. so we kept a journal and relized it was a couple things he ate, school pizza and wendys bbq sauce. now honestly who would think that? lol so whats it gonna hurt to try it, you might be amazed we sure were. good luck with it. let us know i you discover what it was please.