I have looked and looked and still have no idea what I am looking for. Can you even see a nub?! So, wise ones, what do you think- boy or girl? It's healthy so far so that's what matters but I am itching to have a guess. Also as an aside I am 12+1 and measuring 56mm crown to rump, that seems slightly on the small side according to the charts I have found and the percentile graph they showed me at the hospital (only by about 2mm). They didn't adjust my dates so I am a bit confused, is it anything to be worried about? Thanks all 