Sorry to hear the Canadian system is *that* slow re spinal care.. wow.. I'd be having anxiety attacks as well thinking I had to wait that long in a very bad condition.
Ditto on communicating with Mark~ he can really help you out..
Re discograms.. I've had 3. All with some level of sedation tho truthfully I'd do it w/o if it meant the best diagnosis and moving on and expediting spinal care.
Best of luck with your whole spinal journey