I was running the other day and I slipped and stumbled. When I landed on my foot I herd a loud crack and hand to sit down. It felt a little swolen and hot, but I was able to walk on it with a little limp. It still hurts but I can still manage a slow walk on it. From what I said, what could this be, a sprain, crack, bruise? I never really hurt anything before like this, so what do you think it is?