Hi, welcome to HCM.
Your knee pain
may be related to lumabr disc bulge or knee pathology itself.
You have done xray 10 months back. Now you are having severe pain
, so you have to repeat few investigations. There may be some unnoticed minor trauma during exercise.
I will suggest please consult your orthopaedicin and ask for MRI
knee . It will delinate the details of knee and will be helpful for further treatment.
Hope i have answered your query.