So let me make this very clear, if you are injured, or think you are, you go tell your coach and sit on the bench for the game.
Trust me, I learned the hard way that you don't play while injured.
It's not worth it, you might risk permanent damage and a lot of pain.
Also, don't worry, it's not a broken ankle. If it was, you would've known.
For now just ice it and drink alot of water. Bananas will help as well(if it's a cramp).