Find out what to expect during the 1st trimester of your pregnancy symptoms. Below, you will find a wealth of information, which you can use as a resource.
- Baby weighs about 1kg now.
- Baby is about 32cm in length now.
- Baby may turn summersaults in the womb.
- Convolutions appear in Baby’s brain matter.
- This is a critical time for nervous system development and avoidance of later learning difficulties.
- Eating foods rich in essential fatty acids supports brain development.
- Capillaries are visible under baby’s skin at this stage.
- Baby’s heart rate is almost twice as fast as an adult’s.
- Motor neurons of the nervous system control baby’s movements.
- Baby weighs 1,1kg or a little more at this stage.
- Baby is about 34 cm long now.
- Baby detects odours at the 28th week of pregnancy.
- Taste buds have fully developed now.
- Some baby boys’ testes will have descended by now.
- Hiccupping in the womb by baby is possible and quite frequently encountered.
- Baby’s movements are vigorous at this stage.
- Baby could breathe alone if born now but much maturing is necessary.
- Baby’s lungs are fully developed but require maturing still.
- Baby shares many of the smells and flavours that the mother experiences and remembers these after birth.
- By the third trimester mom and dad-to-be should feel far more vigorous movement and be aware of movement on a daily basis.
- Sometimes, as space for movement becomes less toward the end of pregnancy, baby’s movement might seem more infrequent or less vigorous, but regular patterns remain important.
- Baby is able to distinguish between sweet and sour tastes.
- Baby responds to light and sound stimuli.
- The third trimester of pregnancy starts at the end of 28 weeks and takes you to the end of pregnancy, at between 37 and 42 weeks.
- Baby weighs about 1,2kg now.
- Baby is about 36cm on average in length now.
- Baby’s eyes are fringed by lashes now.
- The umbilical cord looks twisted and as if it has knots, but there should not be real knotting.
- Baby’s bones are all formed but they are still soft and flexible.
- At least 25 percent of all babies are born with the cord around the neck.
- Some umbilical cords are even tied into knots but nothing that a mother does will cause this, including the popular myth that lifting arms above one’s head is a factor.
- Most umbilical cords are between 32 and 80 cm long.
- Billions of neurons are being formed each day as part of brain and central nervous system tissue.
- Baby weighs about 1,4kg now.
- Baby is about 40cm long at this stage of pregnancy.
- Baby has a papillary light reflex at this stage.
- The Moro or fright reflex is already present in baby at this stage.
- Baby’s movements are sustained for longer periods at this stage.
- The volume of amniotic fluid now gradually starts decreasing.
- Baby weighs an impressive and viable 1,6kg on average now.
- On average at this stage a developing baby is 42cm in length.
- Rapid eye movement (REM) or dream sleep occurs at this stage.
- Baby’s brain waves can be detected and show wakeful and sleep patterns.
- Inner ear organs that regulate balance are mature enough for baby to regulate its own position in the womb.
- Baby’s heart is beating strongly and rapidly.
- Baby now weighs about 1,8kg.
- Baby is between 45cm long at this stage.
- Fat layers are rapidly accumulating under the skin, making baby bonny and cuddly.
- Baby will mostly have turned into a head-down position by the end of this period.
- A baby boy’s testes mostly descend to the scrotum at this stage.
- Baby’s nails reach the tips of its fingers.
- Baby’s ear cartilage is very soft at this stage.
- Baby looks less wrinkled by now due to fat deposits accumulating below the skin.
- Baby has an excellent chance of survival if born now.
- Baby’s heart pumps about 23.7 litres of blood a day in the womb.
- Baby weighs about 1,9kg at this stage.
- Baby is about 45cm in length now.
- Baby’s eyes move as if exploring the womb environment.
- Baby’s back is extremely flexible.
- Baby curls forward tightly into the well-known foetal position.
- Baby opens eyes when awake and closes them when asleep.
- Movement is an important criterion that indicates much about how baby is doing.
- Baby weighs about 2,1kg now.
- Baby is about 47cm in length.
- Foetal blood continues to deliver vital nutrients to baby in the womb.
- Baby’s skull bones are not fused solid, but consist of 5 unconnected plates of bone.
- Baby can tuck its head so far forward that it reaches its hands at abdominal level.
- Every baby in the womb is unique in size, shape and proportions, just like children and adults.
- On a detailed ultrasound scan one may be able to see family likenesses on baby’s features.
- Babies have mostly turned into the head-down position by 34 weeks, although it is quite possible to still turn right up to the end or even when in labour!
- Some babies turn right back into breech, even if turned by the doctor into the vertex position.
- Baby weighs 2,5kg on average now.
- Baby’s length is around 46cm now.
- The plantar creases on the palm of a baby’s hands are visible.
- The placenta allows oxygen and food to be exchanged between baby and the mother.
- The brain continues to grow at a rapid pace, though growth of the rest of the body slows down from now on.
- The gag reflex, which is important after birth, has fully matured.
- Accumulation of fatty deposits below the skin to ensure a well-padded, healthily plump baby, accounts for the main growth activity n the womb now.
- Baby weighs in at all of 2,7kg or even more at this stage.
- Baby is about 46 to 47 cm in length now.
- Baby is growing and maturing all the time and all the finishing touches are being done.
- Baby’s hair might be 2 to 3 cm long by now.
- The late pregnancy scan will be done sometime around the end of this period.
- Baby looks plump and rounded.
- Most lanugo hair has been shed from baby’s body by now.
- Baby’s spinal cord ends at the third lumbar vertebra at this stage.
- Baby has very few creases on the soles of his feet at this stage.
- A baby boy’s scrotum is rather small at this stage.
- Lightening, the term used for when the baby starts moving a little down into the pelvic area usually occurs between 36 and 38 weeks.
- Many women do not even notice lightening because the effects may well be minimal.
- Many babies only engage, or drop properly down into the pelvis, once mom is in labour, especially in first pregnancies and if you have very good abdominal muscle tone.
- Baby weighs in at all of 2,9kg or even more at this stage.
- Baby may well have reached the 50cm mark by now.
- At birth the placenta weighs about 16-17% of the baby’s birthweight
- The placenta is about 20 cm in diameter at birth.
- The placenta is about 2.5 cm thick at the centre at the end of pregnancy.
- The pupils in baby’s eyes respond to light.
- Baby’s skeleton hardens near the end of pregnancy.
- Twins will often be born a little earlier than singletons.
- At 38 weeks baby weighs about 3,1 kg.
- Baby is anything from 48-50 cm long now.
- Baby’s movements might feel less vigorous as space is at a premium now, but they must still follow the regular pattern.
- Baby gains in the region of 25g a day in this last stretch, although some seem to have a weight stabilisation now.
- Subcutaneous fat layers continue to be deposited in the final month and baby looks beautifully plump and rounded.
- Baby’s lungs are maturing a little each day.
- The vernix layer becomes a little depleted as baby passes the due date mark, although there are still traces of this super-emollient all over the body and thick deposits in the creases of the body.
- Lanugo hair has mostly fallen off baby’s shoulders and forehead but there will probably still be some on his ears that will fall off after birth.
- Baby’s nails are long and give an indication of how overdue baby might be.
- Baby of course only weighs an average of 3,2 – 3,5 kg at birth, so a lot of the weight is contributed by other structures and changes.
- Vernix caseosa covers baby’s skin, protecting it from constant exposure to moisture.
- Head hair may grow up to 4,6 cm long.
- Baby’s skin is very sensitive to touch, all over the body.
- Amniotic fluid helps control baby’s temperature.
Weeks 40 – 42
- By 40 weeks baby weighs 3,2 to 3,5kg on average.
- Baby is all of 50cm at the end of a full term pregnancy.
- There are still traces of vernix all over but thick, white deposits remain in the creases of the body.
- Baby’s nails are quite long and give an indication of how close to or overdue baby might be.
- An ovum is 0,8 mm in diameter and a sperm is 0,05 mm long and the fusion of these two cells results in the birth of a bonny baby weighing an average of 3,2-3,5 kg!
- At about 40 weeks the fusion of miniscule egg and sperm results in a baby of about 50 cm in length.
- In the last two weeks before labour mom might experience an increased mucus discharge, much like before menstruation.
- Uncomfortable back and groin pain and an increase in the strength of ‘practice pains’ is common now.
- Baby is optimally ready to be born.
- A baby boy’s testes will mostly be in the scrotum by now.
- Baby absorbs maternal hormones.
- There might be a slight swelling of baby’s breast tissue due to maternal hormones.
- Baby’s genitals are quite prominent due to the effect of maternal hormones.
- Baby’s skull bones are becoming firmer.
- Most babies prefer to orient themselves toward light in the womb.
- The two reflexes used and needed by babies most frequently are sucking and grasping and these are strongly developed at term.
- Amniotic fluid is essential for proper development of baby’s lungs.
- On average baby weighs 3,5kg at full term birth.
- The placenta weighs about 0,5kg at this stage.
- Amniotic fluid accounts for 1kg of pregnancy weight at 40 weeks.
- Increase in weight of the womb itself during pregnancy is about 1kg.