Ive had the flu for 3 days, with a cough and tight congestion (unable to cough up), aches, slight stuffiness.but major pain is headache. It keeps me up and nothing seems to work. Ive taken advil, tylenol, decongestants, etc, but it is so painful. Pain seems to have settled in left temple and goes down to back of neck. What can I take? Should I call my doctor? I also feel very fatigued and still slight aches.