Thanks for your replies everyone. For those that said boy, was it just a random guess or are you seeing boy parts? I'd be really interested to know which bits you are looking at to guess boy to help me see. I've been researching a lot into this and have found that by 13 weeks there should be an angle of atleast 30degrees on a boy's nub and the girl's nub will be parallel with the spine. On the first picture the bottom of the baby is faded out a lot below what I think is the nub which makes it confusing. On the picture I've circled it looks like it's pointing down a little too. It would be lovely to have a girl as I already have boys so please help if you think it's a boy as to what you are seeing. :)