Screen problem

Okay guys, I'm freaking out here. There's a green line across my (early 2011 MBP), on the right hand side, about an inch off the edge of the screen, from top to bottom, that line is there no matter what, and appears as soon as computer is on (before anything is even loaded). Screen capture does not capture it, so I'm assuming it's the monitor? Switching from integrated to discrete graphics doesn't help either. What should I do? Should I just return it, it's still under the first year warranty?