Knee pain 2 Months. Cap , please help!

Hii , I started yoga in Feb and in few days my left knee started to hurt due to much twisting and bending done in yoga ,i left it immediately and recovered 95% ,Upon request of Yoga teacher i started again and again pain started in left knee, again I stopped the yoga and recovered 95% to 100% , Then again yoga teacher forced me to do yoga again after few days , then he took me extreme levels and since 21 March I haven't done any yoga , I have gone through left knee x-ray,MRI , ct scan nothing has been found but I am not able to bear any weight on the leg , since 13 April I have not gone outside nor ride my bike due to pain in leg , walking inside the house is a task Current pain level have improved but get worse immediately with activity . Pain level increase if I outside,I am stuck please help what should I do Reports are clear Doctor said it's muscular pain There is a spot which hurts while pressing just below the knee cap ,please Help