I broke the little toe on my left foot years ago at work; I never knew how I did it, had no recollection of doing anything that could have broken a toe. When I got home, I took off my shoes and it was turning purple and swelling. THEN it started hurting! It healed back crooked with a protrusion on the outside. It was very odd, as usually an impact strong enough to break a bone and you WILL know it.