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week 1
On day 1 of your period this is the start of the pregnancy, day 14 or a bit after your period the woman starts to ovulate. within 24 hours of ovulation, the egg is fertilized by sperm if you have had sex in the last few days and after 5 or 6 days the egg burrows into the lining of the womb. -
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Week 2
Weeks 1-3 are pretty much the same since you are only starting to get pregnant. -
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Week 3
The same as week 1 and 2 -
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week 4
At week 4 your baby will have the breathing and digestive system, the lungs, stomach, gut and bladder as the inner layer. In the middle layer there will be the heart, blood vessels, muscles and bones. The outer layer will become the brain and nervous system, the eye lenses, tooth, skin and nails. -
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Week 5
The embryo is around 2mm long and the heart is forming as a tube like structure. The baby has already its blood vessels and the blood is beginning to circulate. The umbilical cord is hat connects the baby to the mother. -
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Week 6
The embryo is curved and it has a tail and looks a bit like a tadpole. The arms and legs are in the middle of developing and can become seen as limb buds. On the side of the head there is little dimples that are the ears and little thickenings which will be the eyes. The embryo has a thin layer of see through skin. -
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Week 7
The embryo is now 10mm long. The crown-rump length is from the head to the bottom. The embryo has a big forehead and its ears and eyes are still developing the ear inside starts to develop but the outside of the ear won’t appear from another couple of weeks. Bones will start to develop in the arms and legs and the arm buds will get longer and flatten out which will become he hands. -
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Week 8
By week 8 the baby is called a foetus now which means offspring. The different part of the legs can’t be told yet. The foetus gets nourishment from the yolk sac. The foetus is still in the amniotic sac and the placenta is starting to develop. -
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Week 9
The eyes are bigger and can be seen better and they may have some colour in them. The baby has a mouth and tongue and the tongue has some taste buds. The hands and feet are developing but the little fingers and toes are not separated yet so they are called ridged. The heart, brain, lungs, kidneys and gut are still developing. The baby has grown to about 22mm long from head to bottom. -
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week 10
The ears are developing on the baby’s head and the ear canals are developing inside the head. If you look at the baby’s face you can see two nostrils and the upper lip. The heart has fully developed and beats 180 times a minute. The jawbones are developing and have the future milk teeth. -
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Week 11
The baby is growing quickly and so is the placenta. The face bones have grown and the eyelids are shut and will not open for another few months. The fingers and toes are separating and they are getting fingernails. The ear buds are developing on the side of the baby’s face and will look like ears as they grow. -
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Week 12
The sex organs have developed and so now the baby has fully formed but will continue to form. -
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Week 13
The baby weighs about 25g and the baby’s ovaries or testes are forming inside and the genitals are forming on the outside. You can’t find out the sex of the baby at this stage but there is swelling between the legs which is either a penis or clitoris -
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week 14
The baby is now 85 mm long from head to bottom.it ca swallow some amniotic fluid which then passes into the stomach. The kidneys begins to work and the amniotic fluid passes through as urine. -
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Week 15
Your baby can now hear, they can hear muted sounds from outside ad noises your digestive system makes, the sound of your voice and heart. The eyes can become sensitive to light even though the eyelids are shut. -
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week 16
The baby can make facial expressions now and move their face but the baby cannot control these. The baby can make a fist at this stage and hold each other when they touch. -
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Week 17
The baby weighs 150g now and the face is becoming to look more human and eyebrows and eyelashes have started to grow. The eyelids are shut yet the mouth and open and close. The baby now has individual fingerprints. The baby has a firm grip and the fingernails and toenails start to grow. -
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Week 18
The baby moves about a lot but you can’t feel this this yet. -
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week 19
If you could see the baby now it would be all wrinkled and has started to put on some weight. For the rest of the pregnancy the baby will keep putting on weight. -
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week 20
The baby’s skin is white and has a greasy substance on it called vernix and it protects the skin. The bay is the length of a banana. -
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Week 21
The baby weighs 350g. The baby is covered in soft hair called lanugo. It disappears after birth. -
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Week 22
The baby has now a routine of sleeping and waking up. -
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Week 23
The baby gets oxygen from the placenta but their lungs don’t work yet but are still practising breathing movements. -
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Week 24
Most babies that are born before this time may not live because of how their lungs have not developed yet. -
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Week 25
The baby can respond to noise now and if there is a loud noise you may feel the baby kick or jump. The bay can get hiccups and is passing urine into the amniotic fluid. -
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Week 26
The eyelids open for the first time and can now blink. Your baby’s eyes colour can change. -
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Week 27
The baby’s heart rate slows down 140 beats per minute now. The baby’s brains, lungs and digestive systems have formed but are not completely formed. -
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Week 28
The baby now weighs 1kg. As the weeks go by the baby keeps gaining weight. -
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Week 29
The baby will move a lot now and they don’t have asset amount of movements. -
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Week 30
At week 30 the baby can suck their thumb or fingers. The skins becomes smoother. The lanugo starts to disappear. -
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Week 31
By week 31 your babies’ eyes can focus. The lungs are developed but they won’t be able to breathe by themselves until they get to the stage of 36 weeks. -
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Week 32
The baby is in cephalic presentation which means they are lying with their head pointing down which means they are ready for birth. If the baby isn’t lying like this it still has time to turn around. The baby is still swallowing amniotic fluid and passing it as urine -
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Week 33
The baby’s brain and nervous system has fully developed by this stage -
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Week 34
The bones are becoming harder but the skull bones aren’t because they will stay soft so that when they go through the birth canal it will be easier. The brain will be protected because the bones can gently slide over each other. -
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Week 35
In the uterus the baby is curled up with its legs bent up towards their chest. If the baby is a boy then his testicles are beginning to descend from his abdomen into his scrotum. -
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Week 36
By week 36 the baby’s lungs have developed so the baby should be able to take its first breath after birth. If by 36 weeks the baby is born then it will be able to feed since their digestive system has fully developed. -
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Week 37
The baby weighs about 3-4 kg now and is ready to be born. In the baby’s gut there is sticky green substance called meconium that will form the baby’s first poo after they are born. -
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Week 38
If the baby is stressed then the baby may poo during labour which means the amniotic fluid will contain meconium. The midwife will monitor this closer. -
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Week 39
In the last few weeks the baby’s head should start to move down into the pelvis. -
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Week 40
Lanugo which is the fine hair that is on the baby is almost gone but their may be some patches of it still there. -
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Week 41
The hormones in your body may cause the baby’s genitals to look swollen but when they are born it will go back down to the normal size. -
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Week 42
By week 42 most women will go into birth naturally but if it lasts longer than this and the labour is not induced then you should be monitored to check the baby’s wellbeing. If you go over 42 weeks there is a higher risk that it might be a stillbirth.