fell out of window onto thigh

hi. dont ask me how it happened (long story) but i fell out of a 2 story window onto my outer thigh. theres slight bruising and slight swelling. it doesnt really hurt to move around, but after sitting down for some time, it hurts really bad to get up. other than that, i can basically do anything except move faster than walking. i dont want to consult a doctor yet because i am afraid to lose eligibility for a sport, so i want to see if this will heal by itself. what do you guys think? and what can i do to make it better?