I have had this severe head ache and high fever (103-104) for the past 5 days. Went to the ER yesterday, spinal tap, CT scan, urine, CBC is all normal. the Doc gave me vicodin which is not helping. I haven't slept for the last five days because the pain is soo intense. And the fever doesn't come below 102!What should I do??? What could this be?? I am 50 yrs old.