I have had an ongoing headache on right side of head for four days now. any ideas? doc has me on fierocet, xanaflex, and amitriptyline.

Have you seen: A neurologist? Were you on these meds before the headache? In what order were they added? No easy answer, but would get back to your doc soon.

Second opinion?: Headaches can be caused by a number of possibilities. These include hormonal fluctuations, dehydration, muscle tension, sinus/allergy issues, infections, migraines, tumors, and a number of other medical issues. If not improving, it may be time for a second opinion, or time to seek the help of a neurologist.