Well I do not want to say anything that might scare you so take my thoughts with a pinch of salt, ok? your symptoms may very well be coincidental however joint problems starting with small joints then large joints suggest systemic inflammatory problems e.g rhematoid arthritis I'm sure you know that. but since you are in good health I do not think thath is a problem anyway, just good to have it at the back of the mind.If I was to disregard that, and I look at your knee pain exclusively, I would say its possibly almost not abnormal for a woman to have these symptoms.YOu need to check your abductor strength and any iliotibial tightness on that side. you could easily do dat by standing on one leg.You are presenting with symptoms that are more joint related than muscular. Do a quick blood test to rule out subtle rhematoid problems just to be sure...I am not saying there is so do not be alarmed.All these need to be clear before before you consider the injection dose. like I said since nothing appears to be helping its the last option but I think injection will help immensely.