I Need Help With My Golf Driver?

Look, I just got done playing a tournament today, and my drives were higher and shorter than usual. Does this mean I need a new driver? My drives have turned into cuts lately. I am a right handed golfer that is a 18-20 handicap. My driver is a TaylorMade '07 Burner driver with a 10.5 degree loft and Regular Flex shaft. If you know anything to help me, it would be needed