Is there any way i can get my old iphone backups?

So i just got the beta for IOS7 and i went back to ios 6. I backed up my phone before i downloaded ios7.So now that i went back to ios 6 everything is gone. The phone was set to a new phone and i lost everything. I tried backing it up but it said that i needed ios7 to back it up. Then i accidentally backed my phone up and it deleted the old back ups. Is there any way i can get my old back ups? I know how to find them kind of but i don't know how to sync them back into itunes or my phone.

You need to go back to iOS 7. Also, it's not safe to run the beta unless you register your device's UDID with a developer account through a site like http://www.udid.in/.It's $5, and then you also don't have to worry about Apple disabling your device for running unreleased software.