8 days too long for a headache?

Today is day 8 in a row of fighting a headache. Nothing is helping. I've taken Excedrin Migraine, aleve, tylenol, etc, and they dull the pain for a couple of hours or so, but it comes back full force. Today was the worst...I was shopping, and it hurt so bad that I was holding the sides of my head looking at chicken.

I was involved in a car accident last week, on Tues. I walked away from the scene no problems, but the next day the headache started. Since the accident I've found out that the other driver was unlicensed AND uninsured, so I believed the headaches to be just stress. Yesterday, they came to do the estimate on my car and decided to fix it instead of total it out. This delighted me to no end, as that was where alot of my stress has been coming from. I figured that the headaches would go away. Nope. Got worse. Any ideas? Should I give it a few more days, or just cave and make the doctor's appt.?