Why does my two month old phone not work anymore?

The phone was left in my pocket for approximately 3 hours, i was in a club and leaving the club the phone seemed to have been working but the screen wouldn't work.. the green light was flashing indicating that i had a message. As i imagine sweat went through so i left the phone in rice for 2/3 days.. it worked for a day though the screen was not very clear.. This happened over 2 weeks ago and i have not found any solutions to my problem.. Please Help!