Broken or just rolled.?

I fell down the stairs 4 days ago and sort of rolled over my ankle. I spent that day and the day after icing it on and off for 10 minutes each and bandaged it. I performed on it the second night but had it strapped very tight so it didn't hurt. I can walk, flex, bend, point and everything without any pain although sometimes if i have been sitting/lying down for a while it tends to hurt when I get up and it's quite bruised and swollen.... what do you think it wrong with it? and how long until I can dance again?!!