CONGRATULATIONS! I know exactly how you feel and I'm sure many other members do as well. It is a huge thing. I think it's absolutely normal to feel the apprehension and nervousness of having made the decision. For me my surgery date ended up being almost 2 months before I expected it to be based on my surgeon's timeline. I was thrilled for a moment then I started having doubts.
The on thing that weighed heaviest on my mind was that many loved ones in my church chided me for altering God's creation. I prayed diligently about that because I knew they were speaking to my from their hearts and from their beliefs, but I also knew that my eating had become gluttony...just out of control. One day as I was praying, Matthew 5:28 came to my mind and went to reread the passage Mt 5:28-30, it really helped to put my mind and my "Christian" conscious to rest. By the time my surgery date arrived I have total peace about my decision.
I am a few days short of 4 weeks post-op and I only wish that I had done this sooner.
I would stop reading anecdotal blogs and stick to medical articles, but most of all when anxiety overcomes you, lift it up and let it go.
I'll be praying for you! 