Dropped my iPhone 5 in water but still works?

Yesterday at work I dropped my iPhone 5 in water, not much but enough to fully submerge it. I took it out as fast as I could (no more than 5 seconds) I quickly dried it off with some tissues. Everything was still working apart from the sound, it was very faint but then it started working like normal after I stood the iphone up with the speakers at the bottom for a bit. I have had my phone in rice over night and everything is still fine, it's like nothing ever happened to it. However I don't want to find in a few days that it's broken. Will my phone be fine or should I be over precautions and painfully keep it in rice for at least another day?

Personally I would dry it for another 24 hours.

Better solution is bring it to mobile service center to clean it.
there you will gonna be sure to dry but make sure they are apple specialist for mobile.