How do you get rid of a headache?

Anyone have any great ideas? I've had a headache since Tuesday or Wednesday. I'm now up to taking 2 extra-strength "tyl*nol" I every 4 or 5 hours, and they don't seem to be doing very much. Usually a good night's sleep make even my worst head aches go away...but my head hurts so much that I can't even sleep. I toss and turn and moan and groan. I even taught myself how to turn the brightness down on my computer screen because the bright light hurts my eyes/head. Is it sinuses? Is it allergy related? I don't know. I know that tomorrow I am going to take my allergy medication and see if that helps. For now, I'm going to try to go to bed and get some sleep...hopefully this awful headache will go away SOON! If anyone else has any advice or knows any tricks, please leave me a comment!!!