My pain was never where the gallbladder is. It was right low. Left high and sometimes even left low.
Left pain can be the spleen but since everything is related to each other it is good to start to do the liverflush.
Also if you have pain have a glass of water with 1-3 tsp empsom salt. You can repeat that. If the pain subsides it is a good sign that it is your gallbladder.
Gallbladder problems also can result in back and shoulder pain.
BTW when they do an ultrasound they check all the way from left to write, the nurse said everything is related to eachother. If you had an US make sure that you ask for a copy of the written report. They will mention your spleen, liver etc.