The purpose of this study is to assess the efficacy of intranasally-administrated fentanyl spray to decrease the pain during cystoscopy (the passage of a telescopic instrument into the bladder for purpose of diagnosing the cause of blood in the urine, urinary complaints or any other problems with the urinary bladder). The current standard practice is to use Lidocaine jelly (a local anesthetic) given through the urethra to lubricate and decrease pain. In this study, an additional medicine (fentanyl) is used to reduce pain that occurs during and after the above procedure.