my baby is 3 yrs 9 months old.....hez suffering with pennis erection and pain...urine tests shows everything is fine ..docs says no problem but my baby feels pain with the erection.he passes urine normally without pain and burning sensation but the time when it gets stiff he says it's paining and burning....there is little redness at the pennis.....what should I do I have gone to 3 docs till now...