I am a healthy 19 year old who has the flu...now going on day 5. Been to the doctor and it is considered a viral flu. Throat is very sore...not strep....been tested. I am drinking lots of fluids, taking tylenol, mucinex, and a pain pill (prescribed by my dr). I think my fever broke last night. I continue to experience periodic strong, sharp pain across my forehead. Any thoughts on what is causing the pain?