Put your question also on Ask Andreas Moritz , Ask Shelley and Liverflush forums.
What you need first are liverflushes. The liver carries stones too like the gallbladder.
On the liverflush forum you can look for messages from flowerchild59 (no gallbladder) and several other people who are flushing though they don't have gallbladders.
You might try these things first, before going through more tests. You have to get your body healthier and doctors can only do surgery and that you probably don't need.