How to heel my toes, the one next to the big toe?

welll the toe next to my big toe hurts, it happend yesterday when i went swimming my leg hit the toe, and now it is in pain. Im limping........ and i have to get ready for a fight... with someone biggger and strongr, i cnt change the date of the fight again, the fight is in two days.. how do i make my toe fell better, and anytips to fight the guy