Foot Injury

It seems I have a high ankle sprain (diagnosed by Phil, the coach of the Marathon Club). It ached all night last night - kept waking me up. I think I did this on Monday. It was painful on Tues, but not constant like it was all night last night!!! I have to do the RICE method (Rest, Ice, Compression, Elevation) now. I took some Advil and did ice this morning and so far I haven't had discomfort. I'm guessing I shouldn't do a lot of walking the next few days. I am bummed about this setback! I will do some exercises tonight that don't require me to be on my feet too much. I've never had issues with my left foot so this stinks.