Ureteroscopy is a procedure in which a tube is passed into the ureter, which runs between the kidneys and the bladder, to remove stones or other debris. The procedure is usually well-tolerated, but occasionally there are side effects. The doctors who are best qualified to discuss this with you include your primary care doctor or the urologist who performed the procedure. It is unlikely that removing kidney stones would cause an increase in the amount of urine unless there was an emergency situation where the stones were actually blocking off the flow of urine from the kidney. It does not sound like this was your situation. Therefore, it is more likely that there has been some irritation of the bladder and ureter from the procedure, which can cause cramping and the sensation of needing to urinate frequently. Especially if there is blood in the urine, this is something that should be discussed with your urologist soon. Another possibility is that you have a post-procedure urine infection. This can be ruled out by a series of simple tests that can be performed by your doctor. As always, the diagnosis and the management of your specific condition will require a physical examination by your personal physician. Scheduling an appointment with your urologist or primary care doctor is highly recommended.