I've recently tried some online Pilates classes but I've noticed that my hip and back (I think around the base of my spine) feel like that are clunking or popping as I lower my legs for lots of the exercises. It's not painful but definitely uncomfortable and a bit unnerving. I've heard of clicking hips but it's not clicking much more or a clunk noise and a popping sensation. Just wondering if this is normal and if anyone has any advice - I really want to continue but I'm worried I'm going to cause myself some damage. I can't really afford to pay for any professional classes right now otherwise I would go and ask the advice of an instructor.