It is impossible to provide specific diagnoses over the Internet, unfortunately.
The combination of an ultrasound and HIDA scan are about 95% acccurate in detecting gallbladder diseases. Having an endoscopy performed to rule-out gastritis or peptic ulcer disease is a logical next step, and so I would encourage you to have this test performed. Also, one needs to rule-out kidney disease as well (including kidney stones or chronic kidney infection) and chronic pancreatitis.
Sincerely/ Robert A. Wascher, MD, FACS
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