Hi it does not sound good though if the orthopedic is recommending physical therapy that is a good sign. Good docs will try uninvasive therapies first
I would also try going to a neuro surgeon if this does not work.
I had a ruptured disc L4-L5 and tried physical therapy for 8 months, it did not work so I was sent to neurosurgeon who specialized in backs.
I wish you the best and perhaps someone will come along who can give you a better answer.
There is also an "Ask The Doctor" option on here and for $25.00 you can ask the same question
P.S. yes the urine problem can be related, while PT could help you might want to go to a neurosurgeon (sorry can't think of exact name right now)
Thank you so much for your comments! I am going to post my question to the "Ask a Doctor" section as you suggested.
Take care!