iphone will not turn on after "reboot" procedure

Hello everyone,

Just bought my iPhone 2 months ago and love it! I had texted someone last night and put my phone down, and when i picked it up it wouldn't turn back on. I got home and put it on the charger and nothing. Eventually i was able to "reboot" it by holding both buttons down, but the Apple screen would come on and nothing else. I then got the connect to iTunes message and connected to my computer with no avail. After numerous attempts to reboot it, i left the phone over night and now it won't even turn on to the apple screen. I held the buttons down for nearly a minute and nothing.

new phone and no insurance on it = freaking out!!!