Backlight On, no apple logo after forced reboot, after I dropped it.

I was charging my phone, hitted it by mistake and it fell from around 2 feet, the screen instantly turned white. So I removed the charger and tried to power it off. The button would not work, so I tried to reboot it pressing the power and home button.

After 5 sec or so the screen went black but when it was supposed to come back with the apple logo, it just stays turned off. If I leave it a while it will vibrate (probrably some notifications) and if I press any button (power or home) the backlight will turn on, but the image won't show.

What should I do?