I'm pretty sure I severly injured my lower back in basketball. My spine looks curved-what do I have?

I was playing basketball yesterday and bent down to pick up the ball. When I stood back up I felt immediate pain in my lower back. I looked in the mirror this morning and my spine looks curved. It's like I can't stand straight up, I have to lean to the side to prevent stinging pain. Does anyone know a possible diagnose for an injury like this?