So if your son was having ongoing issues you would prefer him be in discomfort/pain while his issue heals then wait for the next time rather than listen to the opinion of a medical practitioner, let your son have a circ so he no longer has further issues!! I would personally take the initiative myself and speak to my gp about a circ if my son was having ongoing issues as I would feel terrible knowing he was in pain every time.
Pro circ'ers have been refered a few things over the years by anti circ'ers on bubhub and a child abuser is one of them. I think seeing and knowing your child is in pain on an ongoing basis and not doing anything about it is child abuse.
Op, I would ask for a referal to a specialist for a second opinion if your not satisfied with your gp's advice.