Help In dropped my Iphone 4 in the toilet?

Okay so I dropped my phone in the toilet and then it was working fine but just too make sure I turned it off then back on after a while the screen went black with little red lines so after that I turned my phone off and stuck it in dry rice then I went online and started looking around and found out that turning my phone back on is the worst thing you can possibly do so my question is if there is any hope in my phone not being completely ruined please help I am restless and worried thank you for your help

Don't worry about it. As long as your phone works like it did before, it should be okay. If it functions then the only damage is probably external such as scratches and the internal such as the software and apps should all be working as usual.