About 3 weeks ago, I was getting on the school bus and I tripped and hit my leg on the stairs. It didn't leave a bruise or anything, but whenever I touch about halfway below my knee it hurts and when pressure is placed on it it really hurts. It doesn't hurt when I walk or anything, but if I were to jump I would feel a slight pain. Besides that, only when I touch it or pressure is put on it, it hurts really bad. So I was just curious if this was just a bruised bone or something more serious?