Replying to Weird injury on summer setup

So I was hitting a little dfd setup out of three different rails. I slipped out and slammed my shin into one of the supports and my body still went forward. The weird thing was that my ankle was hurting really bad, not my shin. My ankle is starting to swell a little bit so I really dont even know what happened, either if I just strained it or something worse(i dont know crap about medical terms). So has this happened to anyone else?