Knee sudden snap?

My right knee has been “balky” for awhile, I stopped any kind of lower leg lifting because squats and deadlift, even at lighter weight eventually caused pain and I’d be limping around for a couple days after. I think I’ve got IT band syndrome as it clicks a lot when bending it.

Yesterday I did some light squats and felt no pain, but later in the day, while kneeling on the ground, I felt a sharp “snap” in my knee on the outer half. There was a little warm sensation but then nothing in terms of pain or loss of mobility. I can “feel” something different in the knee and weirdly, it feels numb to the touch on the spot where I felt the snap. Could I have torn something without really experiencing pain or loss of mobility? Or could it just be a weird situation where the tendon just made a jarring move against bone.