Having Abdominal Pain, Nausea And Lots Of Bleching. Positive Murphey's Sign. Prescribed Prilosec. Should I Go For Test Again?
YOu have some typical symptoms of gallbladder stones attack and this is the first thing to think of. Such stones can cause biliary colic or pancreatitis attack. But if your US and HIDA were normal then gastritis or stomach ulcer is the next most common diagnosis. ALso, your back pain can indicate pancreatic disorder and it can be found even if there is normal lipase and amilase level. (pancreatic pseudocyst for example).
Of course that you need GI work up first. Sourgeon should not do anything without the exact diagnosis. The only thing when we can operate without diagnostic tests is when there are signs of acute abdomen and emergency and this is obviously not your case.
ALso, stomach ulcer is today treated initialy by conservative managment, second step is endoscopic treatment and the last option is surgery. If gallbaldder removal is indicated then you need surgeon's help,but i dont suggest cholecystectomy if there is no clear indication for it such as visible stone or polyp in gallbladder or GB motility disorder.
So you need to do definitely gastroscopy and I reccommend CT scan to evaluate pancreas and gallbladder more precisely. This would rule out most possible diagnoses.
WIsh you good health. If you have any questions I ll be glad to help.