I woke up, and a while later, felt my head and dicovered avery deep dent on the top left side of my head, however there is zero swelling. The dent was so pronounced it was astonishing to my father when he felt it. There is also no pain. The area on the outside of the divot is the exact same height as the rest of my scull, as I emphasize there being no swelling. There is also nearly no pain at all. It may be slightly tender, but not enough to even annoy me, a small child wouldn't even be phased by this slight sensation. I dont remember hitting my head, but I could have. I thought if I hit my head hard enough to get this result, it would have to be hit extremely hard.