I just went to my PCP for the same thing. Slowly over the last month my right foot has gone numb on the top and now my shin and the outside of my thigh is starting to go numb. My foot drags when I'm walking on the treadmill and I trip, so I've had to stop that too. My PCP is sending me to a neurologist for testing. She ran blood tests and everything was fine. So glad to find I'm not the only one this has happened to. Thanks for posting