Knee and hip pain

Patient: I took a 28 mile bike ride and ever since i have had pain in the back of my left knee and would be from moderate to severe. it gets worse with rest and worse when physical activity. ever since my left knee hurt my right hip would hurt really bad. it would be so severe that it would effect how i move my leg (hip) how i walk and how i get out of bed and put on my clothes. then the back of my right knee would hurt just like my left knee and my hip would hurt. it is swollen but not red. i have tried asprin, ice, and rest and none work. i am 13 adn a female and i have a history of osgood-schatters disease. i am a little overweight but i am active and it never happened until before. and it has stayed like this for about a month and it wont go away