Dear madam, this can be caused by anesthesia
. It is not very common complication. The surgical procedure cholecystectomy
cannot effect on your tongue on any way. Your tongue was probably pressed up against the breathing tube. Also some gasses are used during surgery which could affect your taste sensation. The feeling will likely come back over the next few weeks. If there was any nerve damage
it will take a bit longer time to resolve. If it persist u should go to hospital and ask for neurological or ORL work up.
Wish you good health