I have done kub sonography,urine routine,blood sugar, everything is normal.Urologist also have examined me.But I feel that urine is left in urethra.Which makes me going to urine several times.I don't have any injury.I am virgin non alcoholic and non smoker.I have taken various medicine.But the feeling does not goes.I have this feeling mostly when I am sitting at one place on a hard surface and after going to toilet.As it lessen when I am standing and walking.i have sensitivness in penis.What is the solution please suggest me any medicines which can cure it permanently.