My iPhone 5 screen is completely black and won't stop vibrating

I went to a music festival few days ago and it started pouring rain, i was protecting my phone like it was my life.
After the festival I was really happy to find out my phone was working just fine while everyone else's iPhone lights were frozen on and other phones wouldn't even turn on, i thought i was the lucky one… After putting it to charge last night, this morning the screen was completely black! I thought maybe the charger wasn't working so I grabbed my spare and left it charging while i went to school… I came back from school and my iPhone is vibrating. It does like a double vibrate just like when you initially plug it in every 10 seconds and i won't stop! My screen by the way is still black! I tried holding the home and power button, using another charger and I just don't know what could be wrong! Like my phone is still vibrating next to me as i'm typing this and it is annoying the crap out of me. When i unplug it, it stops but my phone still doesn't work!

Typical moisture damage. Turn it off and take the battery out. Put it in a small sandwage bag and just cover it with rice. Seal up the bag and let it sit out over night. The rice will soak up the internal moisture. When you put the battery back in and turn it on it will boot up in the factory reset mode and should be ok.

I think you should go to the Apple care center and ask them what they can do for you. I think it's because of moisture. I used to experience this last friday when i got home from school, it was raining quit heavy and i put my phone in my spectacle case and somehow it got wet. Not too much just a biy. I let it dry for 5 hours in a room temperature. And i plugged in the charger, turn on the phone and thank god it worked fine.

I gave the exact same problem, but this happened when I dropped it in a river on my way home from school