This sounds like it could be a gallbladder attack. Have they checked for
stones, however my attacks started as an "inactive" gallbladder and I later
developed stones. My attacks would always be about that time of night.
I would have to go to ER. They would give me a demerol shot or pill (100 mg). That would stop the pain in just a few minutes. The next day I would
feel ok but would be sore inside. A spastic colon can also hurt like that.