Sounds like classic gallbladder to me with the right shoulder pain added to the mix. The CT scan can only rule out stones, and you can still have a poorly-functioning gallbladder with no stones present. Ask your doc about a hida scan to evaluate the gb function. It's a nuclear medicine test that just takes a little time, but is totally painless. At one point, you'll be given an injection to make the gb contract, and they can measure how much bile is actually excreted - the ejection fraction. If you get nauseated when the gb contracts, that's a good indication that is where the problem lies.
Thank you for your prompt reply...I thought it sounded classic gallbladder too...just wish the ER doctor had picked up on that...maybe could have already had hida scan and have some answers. I have an appointment with my regular doctor tomorrow and I will definitely ask for the scan.
Wonder why my blood sugar drops? Without stones being present my pancreas shouldn't be involved should it?
Remember that the ducts for liver (bile) and pancreas, do join together and form the Common Bile duct where both substances get mixed together before dumping into the small intestine. If you have sludge in the common duct, it can definitely affect your pancreas by slowing down the enzyme flow from the pancreatic duct. And the pancreas is one sensitive organ that does not appreciate being "messed with" in any way. :-)
Since the hida scan takes over an hour (at least, it did when I had mine done 9 years ago) and it's an expensive test, the ER doc probably felt that since you weren't admitted, you would just follow up with your regular doc and pursue from that angle. It's the old, "Treat-em and street-em" mentality in ER medicine these days. If an ER doc can get you to where you can walk out the door, then out the door you go. Sad, but true I'm afraid.
I really hope you get to the bottom of this problem very soon. Good vibes being sent your way!