For the past couple months i have had on and off slight nagging pain on the bottom and top of the ball of my foot, in between my big and second toe. It never really bothered me bad, it was just there...any way the last couple days it has gotten real bad-hurts the first couple steps when i walk-and the pain doesnt move and pretty much in one location. im a real low mileage runner 40-50...stress fracture possible off of this little of mileage?