You might get a second opinion since your pain is so much lower now.
Or maybe wait on surgery until it is really needed..if you can manage OK right now why go thru with any surgery?
Adding to your stated concern of other level issues, there is also some risk of internal scar tissue overgrowth, that can be a problem for some people.

Do you have a copy of your written MRI report?
The wording - mild, moderate, severe etc and other notes can clarify a few things.

We have a spinal & back pain forum here..
https://www.neurotalk.org/spinal-dis...and-back-pain/

Searching our site using keywords can be helpful also..

You haven't had any expert PT, chiropractic or therapeutic massage for this? I would explore that route before anything surgically invasive..