I didn't until I got home yesterday because 1) at 2am, my brain didn't think of it, and I thought the pain would go away soon 2) at 5am, my brain didn't think of it as I was in a rush to barely pack myself some food so I wouldn't make Bernie late...and I didn't pack an ice pack. I did keep it elevated (wow, giant science books are good for SOMETHING!), but it's feeling much, much better now.