So just for fun I sent a scan off to a couple of nub/skull theory sites but have been given two completely different positions for the nub (on the same scan photo). Had some saying definitely a boy nub as its at 57 degrees to the spine, some say girl nub as it is more or less parallel to the spine. Equally one said skull was blocky meaning boy, another said rounded so girl. So I was wondering what people's thoughts were. Will be finding out in the next week at a private scan (18 weeks). So completely puzzled but know they are just theories 🙂