It might be ok, don't worry. Take the back off and if you can, take the other screws out and open it up so the insides are exposed (but be very careful not to bump or move anything!). Then let it sit overnight or use a hairdrier on it for a few minutes (but not too hot or too strong). This obviously helps all the little innards dry. After putting it back together, it may work again, but if not, you can always buy a new one.
