According to your age, you are facing this knee problem at a very early age. Normally, healthy girls never face this problem. I think you should talk to some good medical providers. You must visit them on and off if this problem of pain is severe. I think you have some physical weakness. Try to take some vitamins like calcium and proteins. But first, seek medical advice and then take care of yourself. indexblogger check this website if you want to know some healthy daily teas to improve your health.