I Fell Hiking And Sprained My Ankle. I Was Stepping

I fell hiking and sprained my ankle. I was stepping off a ridge and my right foot stepped on a loose rock that caused my leg to roll down the hill while my left leg bent behind me. with my foot facing backwards. I felt hot pain that traveled all the way up my calf to the back of my knee. when i managed to get up, My ankle swollen and leg began to swell. I had to walk back up the trail for 1.8 miles over large boulders and tree roots. I have followed the Rice remedy for two days and it is still very swollen. I am able to put weight on it but not without moderate pain.