First, the Superfeet take a while to get used to. I only wore them a few hours at a time to start.
But I think you should get thee to a podiatrist or sports doctor. A little investment now save you a lot of pain later. I suffered with shin splints and heel pain for weeks when I did my walking program last year, chalking it up to being fat and out of shape. But when I finally did see a podiatrist, $20 foam orthotics took the pain completely away in less than a week. (I've seen been unhappy with the custom orthotics, but that's a whole other story.)

