pain in lower body

I have been playing badminton for some time, and I have started to experience pain. I have pain in the top part of my knee where the quads are. Before, the pain was below my knee. Now its like mainly up and sometimes middle. Its in my quads. Do you have any exercises to help recover and strengthen to get back to jumping, lunging, and running without pain? 15M no medical issues 136 pounds. Also, I have no equipment.