Hi oldbat,
Welcome! You're by no means an old bat.

Congratulations on cutting out the alcohol! That's surely going to help in the long run even if you haven't noticed any benefits yet. For one thing, beer has quite a few calories.

Since you've had quite a few tests without turning up any clues, have you looked closely at your activities lately?

What kinds of things are you doing for any length of time each day? What positions are you in? Do your shoes fit well? Might you be standing too much? Sitting too much? Sitting with your legs crossed too much? (That can cause problems.) Would you say you get enough exercise?

You mention that the problems came on in early August. Did something about your activities change at around that time?

I've had quite a few numbness and pain problems that cleared up like magic when I changed something about my daily activities. It's the things we do repeatedly and often that can bring on problems.