I'm not a doctor and I know next to nothing about this stuff but I'm learning through my own illness. Your symptoms
could be SO many things including sludge or microscopic stones
in the CBD, Post-Cholecystectomy Syndrome, Sphincter of Oddi Dysfunction, Small Bowel Bacterial Overgrowth, pancreatitis, etc. or combinations of these things.
Web groups are a fantastic resource. Search yahoo! groups for "Sphincter", you will find quite a few groups.