growth

So I just got out of a regular OB check up, and my ob did an ultrasound to see where baby is measuring. She said baby is weighing 2 pounds, and said that is a normal weight. According to my due date, im 28 weeks 6 days today. Well my ob printed a picture for me from the ultrasound, and on the ultrasound picture it says gestational age-25w2d..she didn't say anything about it, and i didnt notice until we already left. But does that mean baby is measuring that far behind?? Or is it nothing to pay attention to?