I am a christian and I had the surgery May 1 of this year. In the beginning I was completely against it because I felt like I should be happy with how God made me. After talking with family, friends, and a whole lot of praying and one on one time with God I knew it was the right decision for me. I'm so glad that I stood on my Faith in God. I am truly a healthier and happy me for that.
You will be fine. Just keep God first and know that everything will work according to his favor.