Yes you have reason to worry. The last sentence where the nerve root was being pushed is most likely the source of most of your pain. You need another two opinions. Don't do any surgery until you get those other opinions, even if you loved the surgeon you had.
If balance, bathroom, issues are presenting, you need someone to take a hard look to see if there is anything else that can be done outside of surgical intervention. Avoid if at all possible.
I took the steroid shots too. Don't let them talk you into more. If the first set don't work, usually the rest will not either.
Has your doctor mentioned Ketamine infusions? This is what I had when my spine was awful, before my last fusion. It works. It is just a question of finding the pain specialist who uses this medication. It did work for me, and lasted a few months at a time. It didn't hurt either. Used fluoroscope.
I know all this is very scary as you have already been through so much. Do look up each and every term, so when you go to the doc. next you will be armed with information, and many more questions. AT the End of the MRI, last page was there a summary?
I will keep you in my thoughts and prayers. ginnie