My New MacBook Pro TrackPad is Messed Up

First off, my MBP is less than a week old. When I double-tap on the volume control in most apps nothing happens. All the options are selected in the TrackPad settings. Sometimes when I tap the pad it is not recognized. When I first got the MBP the trackpad worked flawlessly. What's up with this? Is it due to an update glitch?