Help ios7 deleted all my stuff

So like you all know, ios7 is out now and I updated my iphone 4s yesterday but I did something wrong and my iphone had to restart like deleting all contacts and pics and apps, I updated my iphone from my laptop by connecting with the USB to iTunes but I kinda did something wrong like I didn't back up my phone and now everything is gone, Is there any chance to get at least my pictures back? Cause i had like 3000 pics and memories, events that will never happen again!

Hopefully you had a previous back up.

Plug in your iPhone into your laptop and have it connect to itunes. You will have an option to restore from previous back up if it is available. If you never backed up your phone to icloud or itunes, you have lost all your information that was on the phone.

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