The sonographer told me that when I go back next week, my bub should be much larger than 44.2mm. Apparently, in order to do the NT scan with the appropriate results, the bub needs to be at least 45mm which mine is a little shy from that. Oh well, I guess I get to see my bub twice this trimester! Yay, at least, seeing that my baby was doing great inside gave me some reassurance!