Welcome to the boarRAB!
Sorry no one has responded to your question. Hopefully this way it will get bumped up and maybe someone will be able to answer you better.
At what level were you fused?
From what I've read pain is all individual. Some people with can a have huge hernaition with no pain while others can have minimal herniations and excruciating pain. Find a good spine or neuro doc!
Good luck and sorry I couldn't be of more help!