I see. Yes, Canada has its problems too, but it is nice that your doctor is being proactive.
I dug into some information for you after I replied earlier. I read two other stories about women who had experienced the burning sensation you described. One was eventually diagnosed with MS while the other was later diagnosed with Fibro. They did not share the tipping point where their diagnosis went towards MS or towards fibro, but at the very least, there are others out there with who you can certainly identify.
The ringing in the ear- tinnitus- does get annoying. I get pulsatile tinnitus, but for me I have found that it is a harbinger of impending problems should I not take action. Fortunately it has never persisted as long as your tinnitus! You might have your tinnitus looked at as a separate problem, because it very well could be. There are many people who have gotten relief from their tinnitus and I would not want you to miss the possibility of getting relief soon.
As to the lead foot, LOL, it is in my familial DNA too. I remember my great aunt at 84 got stopped for speeding at 120 mph. She said she was trying to get back to Colorado through Kansas before the sunset. The young patrolman escorted her the last 5 miles to the Colorado border at normal speed.