I know that bub is small. At Melbourne last time he/she was exactly 3 weeks behind, and this scan says he's 2 weeks and 6 days behind. So, I'm not worried.
But, I've been told that everything that they use to measure him is compromised anyway. Bub's head is a funny shape (most likely from being in breech and having low fluid) and they measure the abdomen which is small than normal because some of the gut is out.
I've got an appointment in Melbourne on Tuesday, so I'll see what they say.

Thanks!