Anyway to try to get it to go away before taking it in to get replaced?
Stuck or dead?
http://osxdaily.com/2010/11/04/apple-dead-pixel-stuck-pixel-policy/
Apple does not usually replace for only one dead pixel; you need 4 bright dead ones and/or 6 dark ones.
Not sure how can you tell the difference?
Dead is black. Stuck is stuck on a color no matter what screen you change it to.