I was in the park walking when I tripped on a step and fell, landing on my left ankle very badly. I live 1 mile away so I litterally had to crawl home as I live alone. My ankles are very weak, and when I got home, the ankle hurt even more. Could I have injured it further by attempting to "walk" home alone? Also, my knee's skin is so chapped from contacting pavement for a very long mile. What should I have done with very few people around?