What you need to do, is to get MRI x-ray done and see if it really is a disc problem or if it's osteoarthritis. Get the facts and evidence in front of you, and then think about making a decision.
If this flares up only every three or four months than I would say that you are in no way ready to surgery, and the medication helps at the same time, then wait.
Do remember that the surgery is non-reversible and not every surgery is a success. Also you need to be with the best surgeons available to you in your area.
Best,
Alastair