iPhone 5 glass slightly raised

Hello all

Need some advice to see if i'm being overly picky...

I've had my iphone 5 since launch day and haven't had a problem until now.

I keep my iphone in a thin shell kind of case and recently i've noticed that when i pick it up or hold it, it feels like i can push the iphone deeper into the case.

When i take it out of the case and inspect it in more detail you can see that the glass on the front of the iphone is slight more raised on one side, i would say max 3mm. Also, if you press it fairly hard you can see it rock between the side that is raised and the side that isn't. It just isn't flush on one side

Anyone else have this problem? I'm not sure its worth taking it to a genius bar as they might just laugh at me. It's just irritating me now I know that its there

Any suggestions? (polite ones)