Sometimes, we exert more and more to win-over an existing knee pain. We feel that our endevour will win over the nature.
Don't forget; pain is nature's message to you. Nature is telling you to take care of your knee joint, and is trying to protect your knee from exertion by giving pain.
See a doctor, try to find out the cause of pain and treat accordingly.
Don't try to win an unknown enemy but first identify and then win.
SO Team