fuck dude i've got one right now, aswell. i feel your pain.
supposedly RICE does nothing, there's a few rehab programs i've been reading up about on where you're supposed to put your foot in a big bucket of ice til its numb then walk up a tredmill backwards on an incline. weird shit i know, i don't have a tredmill so i've never done that part but calf raises sure have helped. i do them all the time, really strenghtens them. but as soon as you've rolled it i'd try that first thing i suggested if you got a tredmill.