I had a root canal about three years ago. It wasn't bad at all. In fact I was bored while they were doing it..lol. i had no pain during or after and the rubber dam really did not bother me either. I really think you're going to be fine. You know how us emets are, we work oursleves up and then when the procedure is done we wonder why we got ourselves into such a state. I prmoise you will be fine. If I could be there to hold your hand I would!!!