I'm sure this random fact will irritate some people.
I do not get headaches. Ever. It's extremely rare if I do manage to get one.
Usually, what I experience is 10-15 seconds of pain, and then it's gone. I have had only a handful of headaches in my life that last hours. I consider myself quite lucky.....though I am also wondering how long it's going to last.....considering I have a 14 month old running around my house and all. ;-)