I broke my ankle 3 years ago, chipping a bone on the outside of my ankle and snapping the ligaments. It has always been weak, but playing football 3 weeks ago, I went over on it. The ankle swelled up massively and after RICE, I was left with bruising on the bottom of my foot. However, I played in a football tournament a week ago, and the last few days I have noticed a grape sized soft lump on the outside of my ankle (where I chipped in a few years ago). It is soft and almost feels like there's fluid in it. Any ideas?