Spacing out while driving

I've been on Topamax for 5 or 6 months now at 100 mg 2nd go at it. I know people either love it or hate it. I have the typical side effects soda's taste flat (miss my diet coke so bad) tingly fingers and toes, my memory is better now that I'm all titrated up I make sure I keep lists everywhere but it isn't as bad as it was the 1st time I tried to take Topa. Overall though the headaches are much much better and I feel that the side effects are worth not having to live under my blanket all day.

So anywhoo it's getting about time for my monthly migraine I can't seem to avoid at least that one even with the Topa. On the way to work this morning I spaced out and drove right past the turn in for the office so at  first I didn't think anything bad because I've been known to do things like that if I'm listening to music or something but I pulled into another parking lot and drove through it. There is a small road between the parking lot I was in and the one for my office and I guess I spaced out again because before I knew it I was in the road driving across it....I don't know how I even wound up there I still thought I was in the parking lot I didn't stop to check for traffic or anything thank god there wasn't any. So I'm a little worried about this.

I don't think this is related to my Topamax because about 2 years ago before I was on Topamax I spaced out and drove through a major intersection in town and almost got in a wreck at the time I wasn't sure if I was tired or if it was related to the headache. Now that I've done something stupid twice I'm worried. I'd hate to get in a wreck and have my kids in the car with me all because of these stupid migraines.

Anyone else have things like this?