I am a boy and after I masturbate, I go to the bathroom in order to pee. However, after I am done with peeing I still feel like I need to pee. I have like a tingling sensation in the inside of my tip and it takes approximately one hour for the feeling to leave. In order to get rid of it I try to pee and it does not hurt me at all but the bothersome feeling remains. It only happens after masturbation. It is bothersome especially if I need to sleep... Any idea of what that might be?