I'm a male junior in high school and I have been around this mileage for a month or so and I just feel all sorts of weird aches and pains. In the back of my left hip it hurts just to walk but when I run I can't even feel a thing. I always get random little annoyances like this and the last for usually a few days but I'm afraid I could be getting injured. I usually run 2-3 hard days per week and the rest is easy to moderate. Am I maybe just not running right (I under pronate a lot and am trying to fix it) or do I just have no talent what so ever.