I turned my ankle a couple of months ago, just walking along the edge of a tarmac road (the grassy verge had hidden holes). It swelled immediately but the bruising didn’t appear for a week, when my toes turned black.
Stupidly – in retrospect – I took my companions on a ride the following day. This seemed sensible at the time, as we were on holiday in the Lake District, and riding was MUCH easier than walking. But that’s maybe why it’s still quite swollen and achey even now.
The worst bit was damaging my expensive Paramo jacket when I tried to stand up, and fainted onto a barbed wire fence!