I need soo much help

Hello,
I got a ipod touch in december and its been working great till now! it died this moring nd i just took it with me to walmart. so i left it in the car and it was in their for like 1hr or less so when i got in the car it showed the simble that it needs to be plugged in to the comeputer so when i got home i did n now its not doing anythig it wont charge. i was looking on this website and saw all the coments and did the 30 seconds thing and everything else but it doesnt seem to work imm soo sad .. (-_-) i need someones help!
Thank you!