my 5 yr old son has had a high feve 104.0 belly pain, throat hurting and lookes like puss spots on his throat, they are red with yellow centers. urgent care did the rapid strep and it came up negative but he is in good deal of pain he is taking ibprofen for fever and they gave him amoxicilin for three days, is their anything i can do to help him???? please i cant take the cries of his pain