Week 1
This week, you would have your last menstrual periods before you conceive. That means, your expected delivery date is calculated as 40 weeks from the first day of last menstrual period
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 2
You would have released an ovum (egg) around this time and if viable sperms remain in the fallopian tube, fertilisation of the egg by the sperm may take place close to end of this week.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 3
During these seven days after conception, the fertilised egg undergoes a series of cell division beginning from breakdown into two cells, then four followed by eight cells and then goes on dividing
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 4
Your baby which is a ball of cells just about the size of an apple seed is now called an embryo. It is made of 2 cell layers called epiblast and hypoblast which form future organs
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 5
Your baby that looked like a mass of cells until now, gains a distinct shape this week. The embryo is about half a centimetre long and appears as a tadpole.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 6
Your baby has grown to about the size of a lentil by now. The brain and spinal cord are developing at a faster rate. Your baby has its facial features developing with those dark spots
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 7
Now onwards your baby almost the size of a grape enters a very active developmental stage and at the same time starts adapting to the life inside your womb.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 8
Your baby measures almost one and a half centimetre by this week. Lot of change takes place this week. The cute little fingers and toes which you long to cuddle with begin to form.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 9
Your baby now appears like a peapod and weighs around 2-3grams. By the end of this week, your baby will measure up to 2.3 centimetres in length.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 10
By the end of this week, your baby has crossed the embryonic period and will be regarded as foetus from the next week onwards.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 11
You are heading towards the end of the first trimester. Your baby starts active movements like kicking and stretching.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 12
This week marks the end of your first trimester. Baby’s vocal cords form this week. Your baby’s kidneys start to function as the amniotic fluid your baby swallows
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 13
You have stepped into the second trimester of your pregnancy. You have your fully developed placenta to provide your baby enough oxygen, nutrients and also dispose waste.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 14
During this week, very fine colourless hair develops and covers most of the baby’s body. It is called lanugo and it usually disappears just before birth.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 15
Your baby is now about 15 centimetres in length head to toe and may weigh around 120 grams by the end of this week. The head portion may account for almost 1/3 rd of the baby’s body length.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 16
Your baby has grown up to the size of a pear fruit and in the following weeks there will be rapid growth in your baby.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 17
Your baby may measure upto 19 centimetres from the head to toe and weigh almost 280 grams by the end of this week.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 18
An ultrasound scan is usually done between 18 and 20 weeks during which you may see your baby kick, move arms or even suck the thumb.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 19
By the end of this week, your baby may measure about 22 centimetre head to toe and weigh around 340 grams.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 20
You have completed almost half of your journey through pregnancy this week! Your baby grows rapidly taking up more space in the womb.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 21
Your baby will be measuring around 25 centimetres from head to toe and weighing slightly less than half a kilogram by this week.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 22
Your baby looks more proportional and weighs around 430 grams and nearly 27 centimetres from head to toe. The first tooth buds have appeared in the baby’s gums. By the end of 22 weeks,
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 23
You may observe that your baby tends to be more active this week, particularly during the time when you are resting. The baby adopts a distinct pattern of sleep though they sleep for most of the time.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 24
At 24 weeks, babies will have increased breathing patterns. A substance called surfactant is produced in the baby’s lungs and lines the lungs to help the baby breathe after it is born.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 25
Your baby can now hear and recognise your voice and be calmed by listening to various types of music. Eyelids can open; your baby can even blink and react to bright light.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 26
Your baby’ skin may be wrinkled though the body weight is about 907 grams. Baby will steadily gain weight in the following 14 weeks.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 27
In the 27th week of pregnancy, your baby weighs about 1100 grams and measures 37 centimetres. Immune system develops in your baby as your natural antibodies
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 28
By the end of week 28, your baby may measure about 38 centimetres from head to toe and weigh slightly over 1000 grams.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 29
The third trimester begins from the 29th week and lasts till birth that is around 40 weeks. Your baby weighs about 1350 grams and may be around 40 centimetre in length.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 30
Your baby will continue gaining weight rather than growing in length from now onwards. Your baby may weigh around 1400 grams and continue depositing fat layers to gain weight.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 31
Your baby now weighs around 1700 grams and looks slightly chubby. The head to toe length of the baby would be about 43 centimetres.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 32
Your baby will have hair on the head, eyelashes and eyebrows evident by now. The fine hair that had covered baby’s body from the second trimester disappears,
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 33
Your baby will turn around and be in a ‘head down’ position until birth. Baby’s movements may change into stretches and twists as it grows bigger and there is relatively less space to move around in the womb.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 34
At 34 weeks, fat layers continue to deposit and your baby weighs around 2200 grams by now. Your baby’s nervous system continues to mature and the lungs are almost fully developed.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 35
Your baby’s expected delivery date is fast approaching and your baby is now in normal proportion and plump! Your baby could weigh around 2600 grams and measure upto 47 centimetres
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 36
Your pregnancy completes full-term by the end of this week and you could give birth to your baby any time from now! Your baby may weigh about 2700 grams and you may feel increasing
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 37
Your baby may weigh about 3000 grams and measure almost 48.5 centimetres head to toe length. Your baby is regarded as ‘full term’ or being on time if born after this week.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 38
You are just two week away of holding your little one in your hands! Though baby’s growth has slowed down, fat still accumulates.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 39
Nearly all of the vernix coated on the baby’s skin has disappeared but there may be some remaining in the armpits or groin areas.
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist
Week 40
After much of expectations and preparation, you may welcome your baby this week. Your baby at term may weigh in the range of 2800 grams to 4500 grams
Tell Me About My Baby - Dr Catherine Harris - Specialist Obstetrician and Gynaecologist