Cat, this sounds strangely familiar
A sprain BBT. Fell in to a rabbit hole 
Luckily it didn't go a funny colour, but it hurt to walk on, and clicks.
Mine did go a funny colour, not too bad though its happend before and been a lot lot worse, bruised on either side of the ankle and really purple The clicks thing.......... is that my ankle still saying it doesn't want to play?
Planning my last run tonight 15m very easy pace before Marafun next weekend. Then I was just going to do a short 3 miler on Wed. No cross training next week, I'm going to go mad. I Do think I'm ready for my 3:45 A race target though.
2k OW swim last night, still not too cold. Told to work on my body roll and reach, I don't roll enough on my non breathing stroke apparently. Counted strokes between a 50meter marker, forgot about sighting and ended up about 10 meters to the right of the marker I was swimming to. I just can't multi task.