You sound like you had a classic case of Osgood Schlatters syndrome. Go see a physio, it should not be affecting you now (its a young kids injury) but some people can still get pains when they are older. You could also have a tendon weakness which through the new inclusion of jumping is leading to jumpers knee. You may need to slowly work in your jump work after a little rest to make sure it heals properly. Get it checked and lay off the jumping until you do.