I have hurt my left ankle.it hurts to walk move it or keep it still. what could be wrong with it?

A sprain or strain: It could be a fracture (broken bone) a sprain (torn ligaments) or a strain (strecthed out ligaments). Have a physical exam by a podiatrist to make sure which one it is and follow the treatment recommendations. Sometimes, just a compressive wrap is needed, maybe a splint or a walking boot. It's tough to say exactly without an exam.

See a doctor: It could be anything from a fracture to a sprain. Needs to be examined.