Had to delete my iPhone backup, now my iPhone will not even register in iTunes. Help?

I deleted my iPhone backup because I kept getting an error message related to my backup whenever I synced my iphone.. so I followed what Apple said to do here: http://support.apple.com/kb/ht4946

The backup is now deleted and my iphone will not sync or even show up in itunes and I don't know what to do. : (