Sometimes we mothers have to put our foot down and say to the pediatrcian, I am not satisfied waiting and not satisfied with you not getting to the bottom of this!!! I want to see the specialist and I want the information, name of the specialist and phone number. Get to the bottom of it. You're his advocate and stand up for him. Please let me know what happened and I will be praying for you and for your son. Are very sure it's in his urine? I was wondering how often do you change his diaper in the day. More frequent than over night right? I was wondering, you see in the morning because over period of hours of no changing, there will be blood. The longer the diaper is on, the trickle of blood comes out and will appear bigger over that period of time???? Maybe not enough comes out or not seen in 2 hours but yes in 6 hours??? I WILL BE PRAYING FOR YOU, C. AND YOUR SON!!!