That ankle is now weakened
The weakening is most likely resulting from the period of non-use following the injury. As mintimperial pointed out, muscles lose their mass scarily fast- it’s about 2% every 24hours, and it’s the muscles around a joint that stabilize it.
The most common injury following a turned ankle is a sprain (partially torn ligament) but it can also be a ruptured ligament (completely torn) or a fracture which would both require medical attention, so always worth getting it checked if in any doubt.
Otherwise contrast bathing is great for decreasing swelling and pain relief:
2 bowls of water, one hot (but not hot enough to scald, obviously!!!!) and one cold, big enough to emerse the ankle.
5 minutes in the hot water, whilst doing ankle pumps (bending and straightening your ankle)
5 minute in the cold water, still doing the ankle pumps
repeat once (so 20 minutes in total)
and relax and enjoy the pain reflief.