Nerves!

I am finally going to have my root canal today. It is so strange, I mean no one likes going to the dentist...I dont think...I have had one before, and it wasnt that huge a deal, but for some reason right now with my appt just a couple of hours away, I am racked with a case of nerves, I feel shaky, queasy, and just plain nervous, i cant think straight, again so strange. I have never had this reaction before going to the dentist....Wish me luck...