I sprained my foot on Friday. I stepped on what I thought was lawn. Instead I was a bit on the lawn, but the outside of my foot snapped down into a trough. My foot has been swollen since Friday. Today is Thursday. Kept ice on it for 24 hours. Bruising started after that, Now bruising is spreading. It is really dark on my toes. Pain is on outside of my foot, not on my ankle.