Purple banana,
When you say it feels sprained, but you didn't sprain it... Do you mean that there wasn't an incident where you twisted it, or landed wrong, but the pain developed later? If so, you may have just really overused the stabilizing muscles around your ankle. Are you wearing tall hiking boots or low shoes? You may want to go with taller, more supportive footgear if you're not all ready. An ankle brace can help too. If it's just the muscles being over used, you should be all better in a couple days
