Just found out I might have a meniscus tear in my left knee(locks up and alot of pain when it does). I'm getting an MRI in a few days to be sure. I was taking a shower today, and noticed my right knee felt cramped I guess, I started kicking/bending it and noticed popping noise coming from my knee cap or around there. Is this normal or should I have this checked out? seems like the popping stop though.