My 9 yr old son has had pain in belly button area the past two days. it is only getting worse. doctor did a ct scan and all looked good. what next?

Continue follow up..: I assume that your pediatrician wants to know if symptoms are worsening. Your son needs to be seen again for examination and further evaluation of symptoms - the causes can be many and not all are seen on CT scan (and not all causes are serious; however, enough are that you need to maintain close follow up until your son is feeling better!)