gallbladder? maybe?

so since my surgery june 8th i have been having issues with right upper abdominal pain. ultrasound says not gallstones and another test for function says its at 35% which is the lowest end of normal. Dr. wants to take it out though. Now as of yesterday the pain completely swithched sides and is on the left side right under my rib cage (exactly the same as the other side was) and both radiate into my back. Im so freakin confused now since the pain has shifted! I think my body is completely retarded! Anyone have anything like this....ever?