Look out for any teeth/gum infections.. During my teenage years I use to get these insane headaches thatd lay me out on the bed with the pillow over my head. This plagued me all throughout my grade school years until just recent when I went to the dentist. Turned out I had several abcesses from several teeth.. Ive had the teeth removed and the infections treated since then, but I still remember the countless sleepless nights I had to rough. Sure wish Id had gone to the dentist earlier.
Edit: I see your headache has gone away, good for you.