my son is 1 year and 18 months old His navel is 1/2 a inch out. when will it go inside or do I need to operate? he does not have any pain or any other problems related to it

A. this is umbilical hernia ,it is due to weakness in abdominal wall , it is very common may occur in 30 percent babies , it will dissolve by own once child started bearing his weight you must visit once with pediatric Surgeon