So the other night when I was sleeping, I woke up to a burning pain on my ankle, I shone a light on it but there was nothing yet cuz it was a fresh 1 degree burn, after a while, I was able to sleep, in the morning I saw the burn, nothing to major, enough to burn the first or second layer, nothing caused the burn that day and nothing in my room could've caused it, so what the hell, any ideas?