I'm so sorry what you are going through.
BOY can I relate to the leg pain issue!! Everything you describe about it sounds spot on to what I've been dealing with. The fire burning sensation combined with heaviness. It felt like my legs weighed 200 lbs each!
Some of us wear our socks inside OUT because the inside feels like sandpaper.
Your constant fatigue.......

One of the first Q's I always ask is how is your thyroid?
It can play a part in some of your symptoms perhaps.

My heart goes out to you.....
You'll get much support here. (unlike all the dismissive Dr's you've encountered)
They seem to pride their capability of associating our pleas for help as some sort of 'depression' or menopause or.......good Lord, the soap we use.

There is much information packed into the Peripheral Neuropathy subforum on tips,resources, supplements and other pertinent info
Check it out.

Caring
Rae