Nothing matches my exact symptoms!

The top of my left foot started out hurting, but never swollen or sore to the touch.
It moved to my ankle and up my leg a little, then to the side of my right shin. The hurt has turned to a severe burning and hurting, mainly to the area of my left ankle. The pain is intermittent and only lasts at most, 10 seconds. I don’t have diabetes and have been tested for potassium defiency. An anti-inflammotory helps greatly. Any ideas what this could be?