I couldn't post this on fitness because of their 'No medical advice' rule. So, I get pain in my right knee during squat warmups. I do ATG bodyweight squats for warmup, pause for some time at the bottom. When I stand back up however, the knee starts hurting and it takes a while for it to go. I don't have swelling and don't feel pain during squats or any other time whatsoever. Has anybody else experienced this before?