I'm not a doctor and I don't generally see one, but what you're experiencing sounds like nerve damage. I've experienced that before, and it may take months to heal. If you're "lucky" it's muscular damage, which will heal more quickly. Time and rest are probably the only cures. If you lose weight in a healthy manner, you'll probably heal more quickly. If there's no pain or swelling, there's probably no need for ice or medication. Good luck getting better. Hopefully it doesn't affect your livelihood.

Ditto all the preventive measures above. Hopefully those will solve the problem. Obviously you're not the only one it's happened to.

Have you checked your blood glucose or A1C levels? Some drugstores like CVS have free clinics for that. An athletic loved one of mine was recently diagnosed with Type 1 diabetes and peripheral neuropathy was one of the early signs.