My iPhone got reset and I can't remember my cloud ID?

So I decided to reset my phone because I needed some apps gone, and I had a logical reason because I had two account on there and it was just confusing.
Anyways, I reset it but forgot what my email address was that had my ICloud account in there, along with all my pictures and contacts.

I'm basically sick, freaking out about this. Is there any way I can find out my email address, or reset my phone back to the way it was? Could I go to an apple store and would they be able to revive my contacts and pictures?

Your iCloud ID is your Apple ID.