Pregnancy Week By Week Fetal Development | Week 1 To 42

Pregnancy Week By Week Fetal Development : Although many women are curious about their growing baby and its fetal development stages, keeping track of pregnancy dates may perhaps be a difficult task. Pregnancy starts from the first day you encountered your last period, though the fetus development does not commence until conception. Pregnancy has 3 trimesters each lasting for about 12 to 14 weeks. The first trimester starts from week 1 to week 13, the second trimester typically ends at week 26 while the third trimester ends at around 38 to week 42.

Week 1
In first week, you are not expecting yet.

Week 2
The ovary releases ovum to your fallopian tube, where it await the sperm to fertilize it.

Week 3
Your child’s inherited genetic characteristics like hair color, eye color, body type and skin starts forming.

Week 4
The embryo separates into two parts; the placenta and the embryo itself. A neural tube grows where your baby’s spinal cord, brain and backbone will form.

Week 5
The embryo develops three different layers: the outer ectoderm, where the nervous system, eyes, ears and connective tissues will form; the endoderm, where internal organs such as the lungs, bladder and intestines will grow; and finally the middle mesoderm, where circulatory system will form.

Week 6
His heart starts beating with a steady rhythm though it’s still faint.

Week 7
Dark spots starts appearing where the nostrils and eyes will be formed. Besides, the ears and mouth starts to form.

Pregnancy Week By Week Fetal Development

Week 8
The baby’s delicate facial features such as eyes, mouth, nose and ears tends to be more refined.

Week 9
Reproductive organs starts forming together with other important organs, such as the gallbladder and pancreas. At this stage your baby’s head double in its size.

Week 10
Paddle-like feet and webbed hands starts separating into toes and fingers, bones starts hardening and his kidneys begins to produce urine.

Week 11
The fetus inhales and exhales some amount of amniotic fluid, this helps your baby grow his lungs.

Week 12
At this stage, your baby’s muscles starts bulking up. As a result he begins stretching and kicking, curl his toes as well as close and open his fingers.

Week 13
Your baby continually gets bigger and his face starts looking more like a human being, his ears moves from the neck to his head.

Week 14
The mouth is formed fully by this week and grows full cheeks. For boys, the prostate starts forming, on the other hand the girls’ ovaries start moving towards her pelvis.

Week 15
The baby’s first soft hair covers his shoulders, back, forehead and ears to help him hold his body heat. He starts developing facial expressions as well.

Week 16
Delicate skeleton hardens from to form bones. Girls develops thousands of eggs in her ovaries.

Week 17
Baby begin fattening and his sweat glands starts developing.

Week 18
Since the nerves and bones in her ears have well developed, the baby starts hearing sounds such as your heartbeat and growling tummy.

Week 19
Vernix caseosa starts coating the skin. This coating assists in regulating your baby’s body temperature apart from protecting his skin while in amniotic fluid.

Week 20
Your baby starts curling, kicking and flexing. His eyebrows, nails, hair continues to grow.

Week 21
The baby’s stomach is now developed and starts absorbing nutrients from amniotic fluid.

Week 22
Your baby’s translucent skin becomes opaque. Then again, it remains, red, and protected by vernix.

Week 23
Billions of brain cells starts developing in the brain of your baby. This helps in the baby’s sensory and movements along with important functions such as breathing.

Week 24
Because of her small size, your baby has enough room to groove. She can also respond to rubbing sounds on your tummy by calming down, extremely loud sounds can make her alert.

Week 25
His first bowel movement starts to form in large intestine.

Week 26
The baby starts sleeping and waking up. He is sometimes very active punching or kicking, and at times remains silent.

Week 27
At this point, you possibly will feel your baby hiccups caused by his diaphragm’s involuntary movements.

Week 28
Your baby starts opening and closing his eyes.

Week 29
This week, your baby pushes, rolls and kicks will occur more often and forcefully.

Week 30
Your baby’s movements reduces because he is growing bigger, as a result, it’s becoming harder for him to move.
Week 31
Your baby is growing more in terms of weight than height. This is because she can’t stretch out because of her bigger size. The baby also encounters some reproductive developments during this stage.

Week 32
By this week, all major organs of your baby are fully functioning with the exception of lungs, which require some weeks to mature fully.

Week 33
The baby is less active at this stage because of minimal space in uterus. Besides, her movements can also be affected by your day-to-day routine.

Week 34
Vernix caseosa starts to thicken to give your baby a well-moisturized and smooth birthday suit during delivery.

Week 35
Your baby positions herself in a way that her head faces down in the direction of the vagina. If your baby doesn’t position yourself this way, you may require a C section. Fortunately, a healthcare provider will correct this problem by twisting your baby manually.

Week 36
Your baby has finished developing his sucking muscles that are necessary for his first feeding.

Week 37
The umbilical cord starts distributing antibodies to the fetus in preparation for birth.

Week 38
Your baby’s brain is in full control of complicated activities such as, digestion, breathing as well as circulation.

Week 39
At this point, your baby has possibly reached his birth length and weight.

Week 40
Muscle activity, heartbeat, appearance, grimace response, and respiration fully develops at this point.

Week 41
Your baby will develop a vernix caseosa coat, but this coat will be rinsed away during his first bath.

Week 42
The baby is still moving in your belly and makes some fetal kicks. He also gains weight meaning that you will deliver a bigger baby.

Final Verdict

The information above is an ideal general guide for growing a healthier baby, although growth and development may differ because of the miscalculation of ovulation or mother’s health. To end, these fetal development stages are important and every woman should be acquainted with.