What did you use? OTC sleep aids are useless for serious insomnia. Have you tried ambien? In a pinch, I've found vicodin sometimes works...if you had any on hand...maybe? If you don't sleep tonight, go see your doctor. I'm worried something is wrong with that migrainey brain of yours.

By the way, do you mean NO sleep. Zero? Not a wink? Or have you been taking catnaps? I ask not to question your honesty, but it just so happens that I had a conversation with a psychiatrist about this recently, and she said that after five days without sleep, people begin to hallucinate (and in a potentially dangerous way), so if this doesn't resolve tomorrow, you should definitely not go to work. If you've had little catnaps or short sleeps, you will feel like shit, but won't need a babysitter. (I would still see the doctor, though.)

I hope you can get to sleep. I know how miserable you are!