Sorry to hear about it Joe.
I, too have pains in my ankles occasionally (not enough, I think)
and think I may be doing damage to them over time. I haven't
had a doc see it when it happens, so I don't know if its a sprain,
but I've broken toes before - and not realized it until the swelling
& discoloration appears.
Keep it elevated, iced, & stay off of it.
I hope it heals quickly.