Upon looking this thread over, I've realized that I made a mistake. My concussions began in 2009, not 2008.

All in all I've been teaching for about 6 years so I'm not sure it could just be related to that. Granted, some of my concussions have occurred at work but not all of them.

Thank you for the suggestion of using an occupational therapist. I will mention this to my doctor when I seem him in the near future.