Hello, few weeks ago, I lifted a conveyor bread toaster and as I was transferring it to the cupboard, I heard a pop at my lower back (somewhere along my backbone), it's painful every time I bend backwards, even when I reach for something. I feel the spot where it hurts when I lie on my stomach and do the yoga position "cobra". Can I put hot or cold compress or any ointment to relieve pain? Or is it best for me to see a doctor? Thank you.