I Sometimes Getting A Shooting Pain In The Back Of

I sometimes getting a shooting pain in the back of my head and eye when exerting myself or straining to do something. I then get a headache that last several days and tylenol/advil won't touch it. The pain is not great, but more of a dull headache around the top of my head and behind my eyes. It seems to be happening more and more with less exertion.