Sound problems with my iPhone?

I dropped my iPhone in water and quickly dried it. After I inspected it (after turning it off then on again: P), only the alarm sounds seem to work. If I try to test listening to any other sounds or music, I can't hear it. I've seen this happen to others when they would adjust the volume and it would still notify when it gets higher or lower, but on mine it shows the volume symbol and no notification to how loud it is. For now I'll hook it up to the charger and leave it off (I already thoroughly dried it).
Any ideas on what to do? Should I buy a new one?

Let it completely dry. In a hot car or something. Then try. If it doesn't work, thennn. New phone for you: D