26 week 3d ultrasound

Baby wouldn't cooperate the other day for the ultrasound. We got to see his face every once in a while but we didn't really get a good look at him. The tech offered for us to come back in a few days because she felt so bad about not giving us cute pics. Anyone else had this problem? Also, she told us she thinks our baby won't be any more than 7lbs. Does that seem kind of small?