my son is 4 1/2 years old, recently he has been bed wetting at night, which is not common for him. He has his hands on his penis constantly, and today I noticed a white chalky discharge on his underwear. He is circumcised, there is no redness or swelling on his penis, there is no tenderness in the area either. He has also had several accidents during the day, while at home.. again not usual for him. He says there is no pain while urinating, but he will run around the house clutching his penis before he will finally run into the bathroom to urinate. As if he is trying to hold it in.. then occasionally 15 - 20 minutes later he will have to urinate again?