For 4-5 days I have been getting headaches on the left front side off my head. Initially, I believe it was a migraine coming on, so I took one of my Naratriptan and slept for a few hours. It was gone when I woke, but a couple hours later I got a headache (not migraine) on the front left side of my head that keeps returning. Excedrin helps it, but within a few hours it returns. I also have some pressure in my sinus area, but my nose is not at all stuffy. Does this sound like cluster headaches, a sinus infection, or something else perhaps?