My son was circumcised when he was around 10 weeks old and has had 2 surgeries. He is now 4 months old and I noticed when I changed his diaper today that he has a purple head which he hasn t had since the day he had the circumcision and the first surgery. The surgery was removing skin from the shaft and the scrotum cause his shaft was connected to his scrotum. Can you tell me why it might be turning purple and if there is anything that I could do or should do to help it.