My 7 year old child is complaining of headache and ear pain from past 4 days as last week he had eaten ice cream and cold water also in sports activities.there is puss coming out of his ears and runny nose .is this causing him headache in both upper front side of head and ear ache also .doctor prescribed him gramocef with other cough syrups like bromexene, ancer and ibugesic plus .is it anything to be worried about .is it anything related to sinus or how .pain behind ears also he says .