Hmm. Have you ever had an MRI to see if there's anything going on from that head injury? I fell off a kitchen chair backwards and hit my head on the floor when I was 2. Apparently I was fine afterwards. I also fell straight back from a standing position when I was 12 and hit my head on the concrete floor. I was unconscious for a few minutes and then kept leaning to the left for several hours. I was clearly concussed but was too embarrassed to tell anyone what happened. I also thought it was a dream for about 20 years. lol