It is normal to be nervous about anything unexplored, change is scary. I hope you can focus on how this will be a new starting point for your health. Best wishes on your new adventure.
I agree with the others. It is normal. I was totally in another zone. My body was there but my mind was some place else. I just going through the motions. The pre- op team were very nice and made the time fly when they were prepping me. You will be okay.