iPhone 4 dropped in water, what can I do?

The other night I was at a party and my Iphone accidentally slipped out of my back pocket into the toilet. It was submerged in water for no more than 2-3 seconds since I snatched it out quickly. I checked to see if everything was ok and to my surprise everything worked just fine. It didn't even shut off after the plunge as I've seen other Iphone's do in demonstration videos I've seen online.

I can still receive calls, send out and receive texts, turn my phone on and off,go online, get notifications etc. The only noticeable damage was this error that kept popping up "This accessory is not optimized for this iPhone” even though nothing was connected to the phone, but eventually that even stopped happening and all appeared normal. My camera lens on the Iphone appeared to have little droplets of moisture and the camera's quality appeared to have been affected but it still works. Being that this is the first time I have ever dropped my phone in water I didn't know what to do, so I kept my phone on since everything seemed to be in working order. Once I got home I even plugged the charger and it was still able to get a charge just fine...Little did I know however that everything I did was harmful to my Iphone. I should have shut it off immediately once I found out everything was in working order. Charging it was also a big mistake since I could of fried my phone internally. So far all of done is placed my Iphone in a sealed container of rice and I'm still currently waiting...I'd say it's been about 6 hours since then.

So I'd like to know what I should do next. How long should I wait before I turn it on again? How long should I keep it in rice? And Also I'd like to know if anyone has had a similar experience to this? and what the outcome was. I don't want to attempt to take my phone apart since I wouldn't know what to do and risk damaging it further. Sorry for the long description, I just wanted to be thorough since I want to every chance possible to save my phone. Thank you.