My DS (11) was a tad small @6.8 oz 38 weeks. My DD (8) was 6.5 oz at 40 weeks. Now with new partner - big, tall man and went to growth scan yesterday which I thought would be a bit of a tick box exercise. Turns out this baby is below the 10th centile and I have to go back in two weeks. I'm surprised, worried and feel like my body isn't good at nurturing babies. :( . His head circumference at 28+2 was 254.9mm which was the most 'out' according to the chart I walked away with.