I've been feeling some lightheadedness along with a lighntess in my body. Also, my vision felt weird although I couldn't tell if it was from the light changes in the room or what. Also, I had a small sharp pain on the left side of my head behind my ear. I don't know of any family history with any serious medical problems so what could this be? Could it be from tiredness because I have been up a while longer than I should have? I'm nervous and scared as ever because this is so unusual for me. What could be happening inside my head?