Welcome to Neuro Talk. It is OK to be afraid. Anytime your spine is worked on, this is normal. Glad you found NT. I did the same thing and came here before my last spinal fusion. Found support, and lots of friends to get me through it.
If you have had all the tests, and more than one doctor agreeing, this is most likely the best action. There are many people on NT, that have had successful spinal fusions. I will keep you in my thoughts and prayers. ginnie