I was walking down a flight of stairs in my home this afternoon and when I stepped down with my left foot I felt a sudden ouch as though I had turned or twisted my ankle but I had not. About 45 min later I had to remove my shoe as walking was becoming uncomfortable and the pressure from putting weight on my foot was hurting. The inside front area of my ankle was swelling. I put some ice on my ankle, and the swelling went down some. It is still tight and walking is uncomfortable but I m not in pain. There is no obvious bruising. What do I need to do and what do you think happened? Break or sprain or neither? 57yr old female