Balance Issues?

I fell last year in the street while taking a walk. I went flying and hurt everything in my body...no broken bones I'm happy to say but I'm wondering if the fall affected me.

I have epilepsy and in 2000 ran into a pole in a wharehouse. The Drs said I had a level 3 concussion. I was told I had better have no more accidents. About a year later I got rear-ended by another car while I was in a stopped position. It was a light tap...really no big deal. When I got home though I realized it had affected me and I felt a little off for about 3 days.

Recently we went on vacation to CA, had a great time. Our flights back went fine. We arrived late in Raleigh and stayed the night. Drove back in the afternoon. We ended up lost and spent about 5 hrs driving needlessly when it was a 2 hr. drive.

It has taken me a week now to recover. I have had problems with balance and get dizzy when I put my head down. Does anyone think this is a result of the time spent moving and traveling? or is it left over from my fall? Do you think this will be a continued problem for me if I travel? I'm really concerned about this.

If anyone can shed some light on my situation or if you have had a similar experience I would love to hear from you.