A little over two weeks ago someone assaulted me and while fighting them off I hurt my ankle, either from kicking them or it may have hit a wall. It was sore for a few days, but nothing too bothersome. The bruising is almost completely healed but I noticed today that I have a slightly raised, hard bump, a little bigger than the size of a quarter, on the front of my ankle where it is still slightly bruised. Occasionally my ankle aches (not always when walking, etc. - sometimes when I'm sitting). Should I be concerned about needing xrays or anything?