I believe you performed a hard reset which resets the phone back to factory specs. As long as you had google contacts set to backup (I believe its on standard, you should be able to get all of your contacts within a few minutes when your phone syncs with your existing gmail account).
Also, all of your pictures/videos/content that you saved on your memory card will still be there as well.
The only thing you will have to re-do is setting your background, setting your home screens back to the way you like them, and finally re-downloading all of your previous apps.
Sorry you reset your phone
