the RICE is definitely a good thing. You can also try the hot/cold shower, like 5 times 1 min very hot - very cold (only on the body part you want to heal). It doesn't always work, but sometimes it can do the trick just to kill the pain for a few hours.
that and...
rest, rest, rest, rest, rest, rest, rest, rest, rest, rest, rest, rest, rest, rest, rest, rest, and rest again.
I read you are in the construction work, so you are pretty fucked.
