provided on this page is for reference only, growth of baby inside womb depends upon many factor and
growth of your baby may differ slightly than indicated below, please seek medical assistance when in
In this week ...
The fertilized egg known as a zygote is implanted in the wall of the uterus
and the placenta and umbilical cord begins to form.
This week your baby is the size of a full-stop, or a poppy seed. It is still
barely visible to naked eye.
In this week there is a lot of organization and cell separation in progress
and three distinct layers of cells start to form viz. the ectoderm (outer layer), mesoderm
(middle layer), and endoderm (inner layer).
Ectoderm, the outer layer, will eventually become the baby's skin, eyes, hair,
their nervous system, their brain, and even the enamel of their teeth.
Mesoderm, the middle layer will become their skeleton, muscles and kidneys,
tissues and vascular (blood) system.
Endoderm, the layer on the inside will eventually become their internal organs.
Once a cell has a specific function, it can't become a different type of cell.
Every one is pre-programmed from the start and knows what to do and what it is to become.
Towards the end of this week and into next week, a transvaginal ultrasound
can show a gestational sac. Yolk sac that helps feed your baby until the placenta is fully functional
Baby will grow to average length of about 0.1 inch or 2.5 mm Crown
to Rump (CR) towards the ends of this week.