What Causes Persistent Fever And Headaches In A Child?

4 YEAR OLD HAS HAD FEVER FOR 4 DAYS NOW RANGING FOR 101 TO 103 ALSO HAS STREP THROAT , TAKING AMOXICILLN ALSO TAKING IBUPROFEN AND TYLENOL AND FEVER IS STILL COMING BACK AND NOW IS COMPLAINING OF HEADACHE AND IS VOMITING TOOK HIM TO DOCTOR YESTERDAY AND SAID TO HAVE HIM JUST RIDE IT OUT. I AM NOT SURE I AM COMFORTABLE WITH THAT