It is hard to tell someone that is scared and in pain to try to put off surgery a few weeks and see if it might help to parasite cleanse then do another couple of LF's. Like Loricalady said, you might just have a diseased GB after all.
However, knowing what I know about the problems parasites can cause, that is the advice I really want to give. It would be up to you to decide if you can stick it out, I know you have been through alot already, and that doctor that warned you of dangers of not doing it now, probably has you pretty scared. Hope it all works out and you get some relief soon.