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Thanks for your query. Kneecap pain is very common in active young people and tends to affect ladies quite commonly too. It’s usually due to increased pressure on the kneecap cartilage as well as slight mal-alignment of the kneecaps. Sometimes, an area of cartilage damage can occur too, and this tends to lead to increased fluid swelling in the knee. From your picture, the knee looks swollen so it might be good to get it checked out at an orthopedic/sports clinic. Generally so long as the cartilage damage is not too bad, treatment will involve some physiotherapy and perhaps some reduction in your jogging for a while. Glucosamine and collagen are common supplements that are taken and you can certainly take some if you like too.
Hope that helps!