Hi Joanna,
I am having surgery on April 26 -- the same day you have your pre-op. I am using Dr. Sherer too. Isn't he great? It is hard to believe, after struggling for what felt like a REALLY long time with the insurance company, that my surgery is really this close! I imagine that is how you might feel too! I just wanted to wish you luck and say you'll be in my prayers with your surgery. Take care.