I am a male with a weight of 72 kilograms and a height of five feet nine inches. I have a grade 3 sprained ankle. On the first day, I had a severe swelling with a size of a softball as well as bruising. It started to appear overnight. On the fourth day, I consulted a doctor and took X-rays. The doctor told me it as a grade 3 sprain and he told me that it has a recovery time of 3 to 6 weeks. Currently, I am unable to bear my weight due to my swelling. My bruising remains the same. Even if my foot is not elevated, I have extreme pain. What is the reason?