You are not alone. Many of us have had the same feelings. As for myself, I was extremely nervous because this is elective surgery and I didn't want to make a wrong decision. On one side of the equation I had my family that was rooting my decision on, and then on the other side I had some friends that were concerned about the surgery. With all of the tug-of-war I realized that it didn't really matter because the ultimate decision was mine.
What I did, that might help you, is to review my reasons and thoughts for having the surgery. I wrote down a list of pros and cons and my fears/outcomes to decide which way the scale was tipping -- for/against? I asked myself if I felt that I had adequately researched the options? Did I choose the right doctor? Am I comfortable with this doctor? And finally, the big question I had to ask myself was if the risk of undergoing this operation would outweigh the risk of not undergoing this procedure. For me, even though I am married and have 3 children, I decided that it was better for me to go through with it than to risk not having a good quality of life or being healthy enough to be around for them.
This is a big decision and I understand your not taking it lightly. Just have confidence that you will choose wisely for you. This is not a club that everyone wants to join. We are all doing it because we realize that we need special help.
Good luck and God Bless! You will make the decision that's right for you.