Potatobugs, it sounRAB like this doctor is not a spine specialist and that's what you need to see.....either an Orthopedic Spine Specialist or a Neurosurgeon who specializes in the spine. ONLY these kind of doctors are truly qualified to diagnose you properly. Their eyes sometimes pick up things on the MRI films that others miss, including the radiologist. I would not trust any diagnosis unless it comes from a doctor who does specialize in the spine and has done many, many, spinal surgeries.
While it is hard to wait when you are in pain, I think that being sure the right surgery is done is worth it. Once they open you up, you can't go back again and spinal surgery is not something to undergo lightly. In fact, if your MRI is not definitive, I think an Orthopedic Spine Specialist would send you for a ct scan with contrast to get a better picture of the nerves in the affected areas.
You are young, and that is an advantage in healing, but it will still take time....depending on what is done. Certainly, no less than several weeks and possibly months to heal properly.
I don't understand at all why the surgeon your dr. called was so insistent that you get more injections. Usually, the dr. would want to see you and evaluate your condition before recommending ANY course of treatment so it seems strange to me. If I were you, I would insist on seeing an Ortho Spine Specialist.....but you will, of course, make your own decision which is as it should be and I wish you the best of luck.
Please stay in touch and let us know what is going on and how you are.
Carol