In the past couple of days I've been having pain on my kneecap when doing squats, especially when weighted and in the bottom position. After workouts the kneecap is sore whenever I sit with the knee flexed, like cross-legged or something. My knees are tracking directly over my toes and aren't wobbling back and forth when I squat.
The pain seems directly on my kneecap, maybe slightly centered towards the top of it.
I did some searching and a cursory review of other people's symptoms indicate this may be a problem with tight quads, but my quads are actually pretty flexible and don't feel sore or tight at all. Does anyone have any ideas?