I was hit on the lower parts of my right knee with a hockey stick about 3months ago. but know when i walk on site and drive my bakkie im experiencing pain in my knee. so what doctor should i see first to inspect my knee?

Well, most primary: care providers can effectively deal with the initial evaluation of knee trauma, but it might be slightly more efficient to see a Sports Medicine or Orthopedic Surgery specialist. A careful exam of the knee to detect internal derangement, tendon or ligament injury is required. Then it will be decided if imaging (x-ray, MRI) will be helpful. Good wishes:)

Knee: I would suggest that an orthopedic surgeon would be the physician of choice. Good luck