Stones can be removed from the bladder in 1-3 days after they fall into the bladder, but in some cases, they can get stuck in the urethra and cannot be removed, so it depends on the size of the stones that fall into the bladder. If the stone is small, it will take less time to be expelled, and the larger the stone, the longer it will take to be expelled. Usually it takes less time to pass through the ureter and fall into the bladder because the urethra is thicker than the ureter. However, there are individual cases where this is not the case. If the ureter is already very dilated, it is possible that the stones that fall into the bladder are also relatively large and are not easily discharged from the body, so you need to go to the hospital in time for examination and treatment.