You probably have shin splints. They typically occur when you switch surfaces that you run on. I used to get them when I would switch from field hockey season to basketball season.
Try (and this sounds silly) getting on your back and bending your knees and just drawing the alphabet in the air with your toes. You should probably stay off of them for a week or so and then try. If you push it too much, they can actually turn into a stress fracture. Also ice and you can try taping them, but I don't feel that works really well.
E93: Montego/Cream <---- E46 (Coupe): JB/Black <---- E30 (Cabrio): Alpine White/Black