Yesterday afternoon I missed a step and fell. I twisted my ankle and heard a pop. I did the rice treatment all evening. Sprain vs break?

X-ray . Rice treatment was excellent. Hearing 'pops' and having signifigant ankle pain , swelling , bruising are all consistent with ankle sprains and ankle fractures. Some people are even able to bear weight on a broken ankle. Good quality x-says will differentiate between the two..! see your pcp or orthopedic surgeon. Best of luck!
May be Fracture. If you push on the bone on the side of the ankle and the bone is very tender then it may be a fracture and you should get an x-ray.