I hurt my right hind leg and need a second opinion?

i was running on the track today when i mustve got lazy and ended up hitting a hurdle instead of jumping over it. (it hurt a lot and now whenever i try to put pressure on that leg a sharp pain runs up it to about the thigh). i've been trying to support it with my other legs but it's very uncomfotable and im not sure what i should do to take care of it or who to have look at it without having to pay a doctor. does anyone else have any idea what i can do?