Foetal Development

Congratulations on your pregenancy!
This is the start if a fascinating 9-month journey where you will experience changes
to your body as your baby grows inside you. Here’s what happens…

Home PagePregnancy 101Foetal DevelopmentMonth 1

Month 1


A phenomenal event has occurred in your body – the start of a brand new life and the first stage of a wonderful journey of a lifetime with your baby.

Here’s what happens – after a woman ovulates, the egg is normally fertilised within 24 to 48 hours. The fertilised egg then travels down one of the fallopian tubes towards the uterus and attaches itself to the uterine wall. Implantation usually occurs between Day 7 to Day 10 from fertilisation. Shortly after that, the placenta and umbilical cord form and these provide essential nourishment and oxygen to your baby. Meanwhile, your baby’s cells are rapidly dividing and the brain, spinal cord and heart are beginning to develop.

By the end of the first month, your unborn baby is technically known as an embryo and is already 10,000 times larger than it was at conception.

Baby’s Length

1/2 inch, a medium-sized peanut.

Baby’s Weight

a few grams.

# Tips for mum:
The first weeks are the most vulnerable for an unborn baby, so it’s a good time to assess your lifestyle. Stop smoking and cut down on alcohol. Check your work environment for hazardous conditions. Take care when handling pets to avoid contracting toxoplasmosis, which can cause genetic defects.

  • Get enough sleep and relaxation!
  • Take plenty of fluids
  • Eat frequent small meals
  • Take folic acid supplement during your first trimester