sounds similar to what a lad at my training had, he got it because he runs flat footed, and the arch support in the shoes couldn't support him properly. ask someone to watch you running in a normal game or training, to make sure your not also running flat footed, if your not then take a week out, or only train lightly. if you think your boots are to blame, then buy some new ones? if it keeps bothering you you might need to get a custom shoe insert, which you can get from your doctor. in the mean time you could use "deep freeze" spray to help with the pain, as well as painkillers