Iphone 5 Dropped Screen Not Cracked BUT CAN'T UNLOCK IT HELP!!!!

My iphone 5 dropped (it is less than a 1 year old). The screen is not cracked. I'm unable to unlock it now and it doesn't recognize any keys when I type them to unlock the password. The phone is still receiving calls, texts..What do I do? Is there anything I can do to fix this at home?

I have already tried rebooting a few times..HELP!!!