Unless a physician posts something, let me offer this as a medical professional (EMT, NURSE, Certified Professional Coder -emergency medicine specialty)..
It’s not likely that most flogging can cause a stone to move. These puppies are not round and smooth, they tend to lodge themselves and come in different sizes. They also can be so numerous they can FILL the gallbladder and common bile duct. At that point you are going to surgery. The other issue which can happen quickly or can take awhile is cholecystitis, an infection of the gallbladder. If you develop stones and cystitis of the gallbladder, it’s coming out. Good luck and as others have said, follow through with getting medical attention please.