I dropped my iphone & now my screen is just black? - 1

So like a month ago, my iphone 5c fell in the toilet. When I got home, I put it in rice and left it on the charger. After about an hour it turned on. I looked up things online and it said to take the back off of my phone so I did, and my screen had a red line going through the middle. But my phone still worked perfectly fine, besides the fact that the screen had red around it. Now today, when I was walking through the halls my phone fell and when I picked it up my phone was black. It was working this morning before I went to school, so then I just left my phone alone all day at school hoping it would work once I got home and put it in rice and I was getting my notifications, and hearing sounds throughout the day. So right when I got home I dropped it in rice. I put it on the charger and it won't stop vibrating every 2 minutes. Also, I tried holding the home screen button and lock button no luck. What could be wrong? What should I do? & is it fixable?

You cracked your screen badly. My brother did the same thing. The screen went black but still worked.

LCD screen is dead. You'll have to replace it. You can do yourself. See below. Or a repair at a shop and that'll run ballpark $120-150. Applecare warranty doesn't cover damage.
Best luck.