yes i have heard that it could be a blocked bile duct or small stone in duct……also another possibility is sphincter of oddi dysfunction……sphincter muscles in this area liver and pancreas narrow and tighten causing this biliary pain that mimics a gallbladder attack………i have been reading as much as i can on this subject and i think that is what i have………have not seen a physician yet…………tooooooooo scared…………..but because of your pregnancy they say that hormones play a part in these digestive organs……..also……..i have also heard that a procedure called an ercp which widens these bile ducts can also cause other problems…….im going to have bloodwork done and see what my liver enzymes are and maybe try some meds before i have any procedures done………..thanks a lot for replying let me know what you find out……….