Retina display small dot in screen
So, I have a 15 inch retina display macbook pro.
I recently noticed a small dot in the middle of the screen. I went to wipe it away and it didn't go away.
I tried really hard to remove it with a cloth and it wouldn't budge. This is the first time I've noticed this mark.
The laptop is three weeks old and I haven't dropped it or budged it quickly in any way.
I'm afraid of it being a permanent mark and I don't want to try too hard to remove because
I am afraid of damaging it more.
It's not ridiculously distracting but I do notice it.
What can I do to find out what it is? What to do about it?
Thanks for the help.
MacBook Pro with Retina display, OS X Mountain Lion (10.8.2)