Grade: 2
I think it's an inflammation of the outside bit of my right arch. Doesn't match the symptoms of a stress fracture, and appears to be in the wrong place for Plantar Fasciitis.
I think it was related to wearing unsupportive shoes, and running on my toes too much (not letting my heel touch the ground enough), causing too much stress on my arches. I have new shoes, and will be trying to improve my form.