Sounds like a sprain, after it goes away do some hand strengthening stuff like fingertip push-ups and get some racquetballs to carry around and squeeze them when you are bored or waiting in lines. Thats what I did my jr and sr year of highschool, everyone knew me by the 2 blueballs and gallon jug of water I carried around. Thats something you should really do is carry around a big bottle of water to stay hydrated, after I started drinking a lot of water I didn't get as many injuries in football, even after the games I wasn't as sore....