I'm really sorry, but there isn't enough information here to to offer you much in the way of suggestions. You really need to see a doctor. Unexplained headaches should always be checked out. Chances are that it's nothing horrible, but that's a big chance to take.
As Teri said, you would need to see a doctor in order to get a diagnosis. If we tell you to take somethig, that would be medical advice and we are not at liberty to give you that, since we are not doctors.
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