Your egg has left the ovary
You are now ovulating and your egg will begin to travel through the fallopian tubes.
Your baby's sex is already decided
Your egg has now been fertilised and the first steps in your baby's development have begun. Whether you are having a boy or a girl is now decided.
Your baby is called an embryo at this stage
Until around week 8 of pregnancy the medical term for your baby is an embryo. After this they will be referred to as a foetus.
Your baby will double in size by the end of the week
You may not feel like you are pregnant yet but that doesn't mean that there isn't a lot happening! Even at this early stage your baby is developing rapidly and the neural tube is already forming.
Your baby's heart will soon start to beat
Already, your baby is receiving nutrition and oxygen through your placenta. This will continue to pass them nutrients from you and oxygen throughout the next 8 months.
Baby's lungs, liver and pancreas are all being formed
You may be feeling tired at the moment and it is no wonder with all that's going on inside you. Your body is getting used to lots of physical changes and your baby is growing rapidly.
Throughout your first trimester your baby develops rapidly. Their major organs such as the lungs, the liver and the pancreas are all being formed and the eyes, inner ears, arm and leg buds are growing this week. It's no wonder that you may be feeling tired a little tired for the first few weeks with all of this happening!
In the first trimester it is normal to be feeling very tired as your body is adjusting to lots of physical changes and your baby is growing rapidly. You can make a big difference to your baby's future health by making good nutritional choices from conception to toddlerhood. It is important to follow a healthy balanced diet during your pregnancy with lots of wholegrains, fresh fruit and vegetables, low fat dairy foods and protein rich foods such as meat and fish. Some nutrients such as B vitamins and iron help to reduce tiredness so make sure you are including meals rich in these - see the recipes below.
Your baby's heart is beating twice as fast as yours
An adult's heart usually beats around 60 - 100 times per minute but your baby's is already beating 150 beats per minute - this will even increase further to 170 in a couple of weeks.
Your little future genius already has a functioning and rapidly growing brain!
Your baby's head will appear larger than their body as their brain grows rapidly now. When they are born, around 25% of their adult brain will already be formed. This will increase to about 80% by the time they are 3 years old.
Fingerprints are formed in the womb by your baby touching the environment around them
Your baby is reaching out and touching structures such as the cord and the uterus walls. The pressue of this on their tiny fingers will result in "friction ridges" which form fingerprints that last a lifetime!
Baby might be tasting different flavours depending on what you eat!
Your baby's taste buds are now formed and as they swallow mouthfuls of your amniotic fluid they may experience different flavours depending on what you eat.
Baby can now get hiccups and their vocal chords are complete
Although you can't hear them making any sounds as sound can't travel through your uterus they are practising using their vocal cords before they are even born. And once baby arrives you will see that they have been giving them a good workout!
for week by week pregnancy and baby development updates