Replying to FT pain?

SO. I got my classics and have skiied them twice now. Mostly on complete slush or ice, and in my right foot i develop a pain about 15 mins into skiing....its bearable but still hurts like hell. It's right above that ball on your ankle on the outer side of my right foot, it feels like a muscle problem or fatigue, but I'm not sure. The boots have been molded so I'm not sure what the problem is. Any help would be greatly appreciated +K for help.