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Week 1
In the first week of your pregnancy, there's no baby, but a growing fetus will be there very soon -
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Fetal Development Timeline
Created by Hunter Tomczyk -
Week 2
There's no fetus inside but ovulation is occuring, which is the best time for one to be conceived. The egg is patiently waiting for a sperm to fertilize it. -
Week 3
Sperm finds the egg.
Fertilization occurs and the baby begins to take form as a tiny group of cells.
Appearance, sex, and even some of The baby's personality and intelligence are created during fertilization. -
Week 4
Blastocytes that will eventually be the baby splits and forms the placenta and the embryo. The specialized parts of the baby's body begin to develop. -
Week 5
Baby's heart and circulatory system begin to develop. hCG levels are high enough to show results on pregnancy tests.
Baby is as big as a peppercorn. -
Week 6
Baby's face begins taking shape.
Baby is about the size of a pomegranate seed
Many women will experience peeing very frequently. -
Week 7
Baby's brain begins growing
Baby is about the size of a blueberry
Many women will experience tingly, achy breasts. -
Week 8
Baby begins moving around frequently in womb.Your Developing Baby. The baby is starting to develop fingers and toes and has some tiny facial features.
Baby is about the size of cranberry bean -
Week 9
Baby begins to build muscle. Also the baby's head is about the same size of the rest of the body.
Baby is about the size of a cherry
Women may experience exhaustion -
Week 10
Baby begins building bones and cartilage. Fingers and toes are showing, and kidneys are producing urine.
Baby is about the size of a kumquat
Women need to increase fiber intake for pregnany constipation -
Week 11
Baby begins to resemble human being. The baby is also Inhaling amniotic fluid to help develop strong lungs.
Baby is about the size of brussel sprout -
Week 12
Baby is flexing muscles and has reflexes inside and The baby can feel when you put your hand on your stomach
Baby is about the size of a passion fruit -
Week 13
The baby's organs are done forming, and their eyes are moving toward the center of the face instead of the side. Baby can even suck on their thumb now.
Baby is about the size of a lemon -
Week 14
Hair begins to grow on head,eyebrows, and body.
Baby is about the size of a nectarine
Mothers symptoms should begin easing up. -
Week 15
Baby begins kicking and flexing elbows although the mother might not feel it. The baby an also make facial features.
Baby is about the size of an apple -
Week 16
Baby's eyesight begin to develop as well as the babys eyelashes. Umbilical cord is fully developed
The baby is about the size of avocado -
Week 17
Baby begins practicing for sucking and swallowing in womb for preperation of feeding. Baby's sweat glands are developed as well
Baby is about the size of pear -
Week 18
Baby's movement should be felt now as it moves around more. Baby's ears are now there but are very sensitive
Baby is about the size of sweet potato -
Week 19
Baby's skin creates a protective coating
Baby is about the size of mango -
Week 20
Baby's gender can be found through ultrasound. Baby is now kicking and flexing their muscles and testing out their reflexes.
Baby is about the size of artichoke. -
Week 21
Baby begins "grazing" on whatever the mother eats. Baby's having a growth spurt from all the amniotic fluid they're swallowing
Baby is about as long as a carrot
Mother typically starts to show stretch marks -
Week 22
Baby's senses begin to develop especially the sense of touch
Baby is about the size of papaya
Some mothers may experience feet growth -
Week 23
Baby is becoming plumper or bigger as well as their brains and lungs.
Baby is about the size of a eggplant
Mothers may notice the linea nigra on her belly -
Week 24
Baby's facial features begin filling out and baby will respond to familiar voices
Baby is about as long as a ear of corn
Mothers belly buttons may be (really) popping out -
Week 25
Baby is preparing to take first breath. Baby also starts producing poop that won't be let out until after birth
Baby is about the size of acorn squash -
Week 26
Baby's can distinguish night and day by quietness and baby can also distinguish partners voices.
Baby is about as long as zucchini
Mothers may experience restlessness -
Week 27
Baby moves on to a new growth chart and can now hiccup.
Baby is about the size of a head of cauliflower
Mothers feet and ankles may experience swelling -
Week 28
Baby begins to blink, gains eye pigment, and the baby will start dreaming
Baby is about the size of a kabocha squash -
Week 29
Baby's weight increases rapidly also intelligence and personality become more apparent through brain
Baby is about the size of a butternut squash
Mothers varicose veins may begin to show -
Week 30
Baby's brain begins developing and becoming more advanced. The baby also from now until birth will gain about half a pound every week
Baby is about the size of a large head of cabbage
Women may experience heart burn -
Week 31
Baby's senses begin to increase and baby has grown so much it will remain in fetal position until birth
Baby is about as long as a leek
Mothers may experience shortness of breath from decreasing breathing room -
Week 32
Baby practices sucking and breathing as the lungs develop even more
Baby is about the size of a Napa cabbage
Mothers uterus may begin to have Braxton Hicks contractions -
Week 33
Baby's immune system gets a boost as the baby's development is slowing down
Baby is about the size of a pineapple -
Week 34
If the baby is a boy his testicles descend and the vernix caseosa becomes thicker to prepare skin for big day
Baby is about the size of a cantaloupe
Mothers may experience less sharp vision -
Week 35
Baby's brain grows rapily making their head weigh more putting more pressure on the moms bladder. Baby's head is making its way upside down for birthing
Baby is about the size of a honeydew melon -
Week 36
Baby's bones are almost if not fully developed and baby is creating extra fat
Baby is about the size of a canary melon
Mothers experience aching in their bones -
Week 37
Doctors usually begin checking for labor signs
Baby begins preparations of birth by sucking, breathing, and turning in the womb. The umbilical cord starts sending antibodies to protect baby after birth
Baby is about as long as a Swiss chard -
Week 38
Baby produces surfactant which will help it take its first breaths
Baby is about as long as a rhubarb
Mother produces colostum which is the precursor to breast milk -
Week 39
Baby's brain is still developing very quickly but has reached birth size
Baby is about the size of a mini watermelon
Mother may begin showing signs of labor -
Week 40
This is the official end of pregnancy.
Only 3-5% are born exactly on their due date and some may be born earlier or later in the coming weeks. The baby may already be in this world or is soon to be in this world either way the mother should be congratulated for her 9 month journey
Baby is about the size of a watermelon
