Hello Joycer
It may be a little too early to tell what is causing the bothersome feeling in your knees. I don’t yet have quite enough information to help you! After all you’ve only done 3 classes.
So here’s my first little bit of guidance. Please go and check out the video Great Posture From The Ground Up. It will give you a lot to focus on regarding your poses which will affect your knees.
Experience some more yoga. Come back here and tell me what patterns you have become aware of with respect to the pain or discomfort you are feeling, whether it’s happening only in class, at what times and with which movements and or poses.
That’s enough for now. Take it easy and don’t go to a point of pain in your poses.
See you soon!
Namaste
Gabrielle 🙂