Tibialis anterior:Suggestions on preventing pain?

jkp5023

My tibialis anterior has been sore the past week....It could be a result of my non supportive flats I wear to work as my inner foot on that leg hurts a little bit as well.
Can anyone recommend ways to prevent the pain? Also is using the elliptical going to injure in more? I also over pronate so I'd love to hear what shoes you over pronators use for running!