Sprained ankle from jogging?

Hi, I sprained my ankle yesterday from jogging and was wondering if anyone can estimate the severity of it? SO far, I can't really walk properly without experieincing pain, and its an inversion ankle sprain. I was doing some research and found out that my situation fits into the level 2 sprain category, where victim can't really walk but can take a few steps. Can anyone recommend any treatment ways or will I have to end up in a cast and clutches?