Re: endoscopy hypoli
If you are + for H. Pylori, you are +. Unless you had it before and are having residual, which can show as positive even though it doesn't really count. The biopsy is the best, but if you can get 1 of the other tests to verify, that would be good (can't recall besides the blood test, which isn't as good I hear).
Doesn't mean you don't have GB problems at the same time.
GB could be sludged up, which will not show. Also, await your HIDA results; that may show that it's slow. If not, still possible you could have sludge that is bringing the GB function downward, even if not technically "deficient" (it could be deficient for your normal self). I think in this case of "all negative", all they do is go by your nagging symptoms which won't go away, along with lack of results from other treatments.
But, as long as the HP diagnosis isn't spurious (doubt it with biopsy), I would definitely treat the HP and go from there.