I am writing this post with trepidation as I know it is not everyone’s cup of tea, however a few people have asked, so here we go…
DISCLAIMER: IF YOU ARE PREGNANT/PLANNING ON BEING PREGNANT AND DON’T WANT TO KNOW WHAT GENDER YOU ARE HAVING PLEASE MOVE ON
When I was pregnant with number 2, intrigue got the better of me and I ‘Googled’ Old Wives Tales on what gender I could be having. I stumbled across a post from America about The Nub Theory.
What an earth am I talking about? The Nub Theory is basically a ‘theory’ that can tell you what gender you are having from your 12 week scan ultrasound photo.
Between 11 and 14 weeks’ gestation both genders have a protuberance between the legs. They look incredibly similar at this point, except for the angle at which they are pointing. Sometimes there are males and females at this stage which are in the ‘grey area’, but essentially a boy’s protuberance is 30 degrees up relative to the backbone and a girl’s is below 30 degrees, or parallel to the base of the spine. The starting point is to look for a bright white line at the base of the body.
If you get your scan at 11 weeks, it can be difficult to tell the difference between the genders. A scan at 12 weeks is around 75% accurate and at 13 weeks it’s closer to 95% accurate.
I often get sent my friends 12 week scan pictures who want me to hazard a guess. When you know what to look for, it is quite obvious. However if you do want to know and you think what I am saying is barking mad, you can always pop to The London Ultra Sound Centre for a Gender Identification Scan from 15 weeks to hear it from a professional!