I also have numbness and my left eye dilates more than my right. I've also had years of muscle pain. I've had 2 brain MRI's. They show about 30-40 small lesions, but not in the regular pattern for MS. My primary wanted me to get the spinal tap, but the neurologist said those lesions might even have been caused by migraines (which I got as my first Mirena "gift."
The upshot of it is, I don't believe I have MS. There are a lot of previous posts here about women worried about MS. I don't think any of them were ever really diagnosed. I am 99% sure that is is Mirena. Some women experience almost immediate relief when they get it out, while others take a long time to heal. But no one feels WORSE with it out than they did with it in.