Okay, physically my leg is now twinging on and off.

Aiee! Have they ruled out sciatica or a pinched nerve? The reason I ask is because it now appears that the problem with my foot, which was very similar to how yours sounds, was a nerve being pinched by the lymphedema, not planter fascitis as the doctor originally suggested.

(sigh) I will be so much happier when they find a way to make you feel better. And refuse to feel guilty about how you walked on it, because if they can't tell what caused it, you can't know that you did something wrong. So there. {{hug}}