IPhone sound settings not working after being in water?

Hi, yesterday my phone had a bit of an accident and was submerged in water for maybe 2-3 seconds. I pulled it out and dried off the front, thinking the back was safe due to my case, which isn't even meant to protect it. Maybe 15 minutes later when my class was over, I took off the case and noticed the back was wet too, so I dried the phone, the case, and put only the phone back in my pocket. I thought everything worked, because as soon as I got the front dry, I opened Siri, and it made noise. Later on the bus, I noticed that my sound settings don't work. Music won't play unless earphones are in, and the sound sliders in music and when I double tap home don't show up. Also, when I try to change ringer volume, the squares to show me how loud it is aren't there. The volume buttons don't work right away as well. My phone is currently fully submerged in rice, protected from scratches and small particles by pantyhose. It's been there since about 4:30 pm yesterday, September 9th. I also turned it off yestersay, but it cut on this morning and my school alarm went off, but I checked and it still doesn't work. It's cut on once before, when I turned it off on the bus yesterday. I read online that it has liquid sensors, neither of which are red on my phone. Anyway, will it fix itself if I leave it in rice longer, can it be fixed, or will I have to get a new phone, (which I really hope I don't have to do)?

Be more careful with the replacement.