I have had trouble with what i thought was plantar fasciitis in my left foot from running. now the top of my foot is numb though and i have not run.

It figures.: It could be quite possible that you were wrong in your initial assessment of your foot. it is time for a professional opinion of the problem.

You are right: You are right in now reconsidering your initial diagnosis. Plantar fasciitis in and of itself is not typically associated with numbness. Don't hesitate to be seen for a evaluation, multiple other possibilities including possibly tarsal tunnel syndrome.