My pinky toe on my left foot has been numb for a week now?

Sleepy Toe.: Numbness of one or more of the little toes can start and end with complete mystery. The problem is commonly due to pressure applied to the toe. The pressure need not be dramatic, but can be subtle in nature applied over a longer time. Typically shoes are notorious for being the culprit. Try isolating a potential shoe and stop wearing it for a while. Give it some time to see if it resolves.