My big toe keeps going numb? Help?!?

My big toe is going numb, and I just started working. It's been extremely painful on my feet but I still have to work. I've started drinking the neuro drinks by aquafina I believe or sprite, but they have helped tremendously on the muscle aches but my toe just gets numb every time somethig skids against it. I know this sounds odd but I'm concerned...anyone have this trouble?