Screen Problem

I've searched far and wide through the internet and these forums. I have not found a similar situation to mind. I apologize if this is a repost.

I bought my unibody MacBook on December 29th, 2008. Just tonight when I picked up my MacBook the screen seemed to go into negative mode. I picked it up with my right hand placed in the lower right hand corner (below the arrow keys) while the screen was open. I was able to get the negative screen color to go away by moving the screen. I did some more fiddling with it and it did the same thing. Instead of moving my screen I let it be for several moment and the whole screen became flooded with white. I tried moving my screen forward or backward, but it did not help. I had to shut my screen and open it back up for it to work again. It seems it only does it when I pick it up in a way that puts a lot of pressure on the screen hinge (i.e. picking it up with on on on the far left or far right side WHILE the screen is OPEN.) I did not put my screen into negative mode either. The screen works fine normally, it is only when I pick it up. I have been using graphics card more frequently because I plug my DVI/HDMI cord into my TV and use my MacBook on my LCD TV. Future thanks to anyone who contributes to this thread!