I lost all my photos on iphone 5 after update?

So i got an iphone 5 a few months ago and i just plugged it into my comp and brought up itunes for the first time. It said i had to update itunes to use it with my new phone so i did and it automatically restoreed my phone from the last time i saved it i guess which was a long time ago when i still had my iphone 4.so anyways it put all my pictures, notes, videos, music, everything from my old phone onto my new one and deleted everything off of my phone including photos i didn't have saved. Is there anyway i can undo the restore and get all my stuff back? Please help!

Added (1). Also it went back to the older version of the app and itunes store and doesn't have the new features that the iphone 5 had.

Did you check to see if the photos you had were backed up?
i could see itunes backing up those photos before chaning anything

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