Hi,
using ice is only recommended in the first 48 hours to keep the inflammation down. if you are still needing the ice after 48 hours, I'd suggest going to a good phyisio therapist and having it checked out.
Hello you can use ice 10 mins on and 10 mins off until swelling subsides and wrap in an ACE wrap to help stabilize the area. Ensure the ACE wrap isn't too tight because it can cut off the circulation to your foot and leg, if your toes or leg turns blue or feels cold to the touch you need to loosen the wrap because it IS too tight. A break symptoms are generally seen as pain and swelling, bruising may or may not be present depending on whether or not you ruptured the veins in that area, so either you have broken it or sprained it badly. But the crunching sound you heard sounds more like a break, but only an x-ray can tell you for sure. You really need to see your doctor, go to ER, or an immediate care so an x-ray can be done, and in the mean time avoid putting weight on the area as it can make the symptoms worse. I Hope This Helps and Good Luck.