I know what you mean about your feet. I am going through something very similar.
Like your sx, my lower back, legs & feet issues started very suddenly about 1 1/2 weeks ago.
Although, I do know that I am paying the price for over-doing for the last 6 weeks.
BUT how could I pass up the opportunity of being with my new grandson???
Also, this is not the first time for this to happen for me. Right around 2004, I stared having issues with my legs not wanting to work.
One thing I have noticed for me, is that if I try too hard to make my legs move - the less they will sork at that point.
I have to take a deep cleansing breath, and focus on relaxing, then I at least get some movement.
Have you considered that the issues your having with your legs & feet are a result of back issues??
It's just a thought to consider. I know that my leg & feet issues are definitely a sx of my lower back.
What ever you find out @ your LLMD visit, I would really like to 'hear' what he/she thinks -- if you don't mind. =)
I hope you can find some encouragement here & from your LLMD.
"Conditions": Lyme Disease, STARI, RMSF, Hashimoto's Thyroiditis, Lyme Arthritis, Neuro LD, FM, Chronic/acute EBV, IBS-C, Diverticulosis (& "itis") & now Lyme arthritis (?).