I Sprained My Ankle Around 3 Days Ago, Twisting It

I sprained my ankle around 3 days ago, twisting it to the right and it was very difficult to place weight on the foot. Now, most of the pain is sub-sided but the swelling remains, which seems to be pitting edema. What would be the best treatment for this case? I think it might be due to a small fracture in my ankle which may be obstructing the draining process.