Hi ! Your pain in right upper quadrant radiating to the back could be due to a stone in the CBD which may or may not be associated with inflammation of the pancreas
. Please go for a serum Amylase
, and Serum Lipase estimation on consultation of your doctor. CT scab is good to exclude pathology of organs, but is not a very good investigation for stone, and still ultrasound
is a good investigatiion for diagnosing stones in the hepato-biliary tract. Your doctor may suggest you for a MRCP which is specific for detecting pathology of biliary tract which might have got missed in an ultrasound or CT scan
The site of your pain does not go very much with the pain of appendicitis
unless the appendix
is a subhepatic in its position.
Your upper abdominal burning, stabbing and nausea
all could occur due to both the conditions mentioned above, and each has to be excluded by clinical examination in combination with the investigations noted. The AST and ALT levels you have mentioned are not very significant to conclude on any hepatic problem. The findings of urine test also do not seem to be of much significance in the absence of any urinary symptoms.
I hope your querries are answered to . Wish you good luck.