The point of the scan is to work out how many weeks pregnant you are. Ectopic pregnancy and miscarriage: diagnosis and initial management CG 154.
You may have calculated the length of your pregnancy from the first day of your last menstrual period (LMP).
In a girl, the genital nub will become the clitoris and labia.
Nub theory is based on the idea that it's possible to tell which type of genital nub your baby has from the dating scan image.
This means that accurate dating reduces your chance of having your labour induced because your baby is thought to be overdue.
I am certain I ovulated around the 28-29th of August :-) Mine wasn't picked up until 8 5...
that was the third dating scan, in have pcos so although I was positive of my Lmp, cycle could of been abit longer or implantation could of taken longer too. I went home and googled and spent the whole week stressing out thinking that there wouldnt be a heart beat when I went back.
It'll be too early to find out the sex of your baby at your dating scan.
The kind of scan machine your sonographer uses isn't high-tech enough to easily show the physical difference between a girl and a boy. All embryos have a small bud or swelling (genital nub).