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.
In first week, you are not expecting yet.
The ovary releases ovum to your fallopian tube, where it await the sperm to fertilize it.
Your child’s inherited genetic characteristics like hair color, eye color, body type and skin starts forming.
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.
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.
His heart starts beating with a steady rhythm though it’s still faint.
Dark spots starts appearing where the nostrils and eyes will be formed. Besides, the ears and mouth starts to form.
The baby’s delicate facial features such as eyes, mouth, nose and ears tends to be more refined.
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.
Paddle-like feet and webbed hands starts separating into toes and fingers, bones starts hardening and his kidneys begins to produce urine.
The fetus inhales and exhales some amount of amniotic fluid, this helps your baby grow his lungs.
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.
Your baby continually gets bigger and his face starts looking more like a human being, his ears moves from the neck to his head.
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.
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.
Delicate skeleton hardens from to form bones. Girls develops thousands of eggs in her ovaries.
Baby begin fattening and his sweat glands starts developing.
Since the nerves and bones in her ears have well developed, the baby starts hearing sounds such as your heartbeat and growling tummy.
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.
Your baby starts curling, kicking and flexing. His eyebrows, nails, hair continues to grow.
The baby’s stomach is now developed and starts absorbing nutrients from amniotic fluid.
Your baby’s translucent skin becomes opaque. Then again, it remains, red, and protected by vernix.
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.
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.
His first bowel movement starts to form in large intestine.
The baby starts sleeping and waking up. He is sometimes very active punching or kicking, and at times remains silent.
At this point, you possibly will feel your baby hiccups caused by his diaphragm’s involuntary movements.
Your baby starts opening and closing his eyes.
This week, your baby pushes, rolls and kicks will occur more often and forcefully.
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.
By this week, all major organs of your baby are fully functioning with the exception of lungs, which require some weeks to mature fully.
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.
Vernix caseosa starts to thicken to give your baby a well-moisturized and smooth birthday suit during delivery.
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.
Your baby has finished developing his sucking muscles that are necessary for his first feeding.
The umbilical cord starts distributing antibodies to the fetus in preparation for birth.
Your baby’s brain is in full control of complicated activities such as, digestion, breathing as well as circulation.
At this point, your baby has possibly reached his birth length and weight.
Muscle activity, heartbeat, appearance, grimace response, and respiration fully develops at this point.
Your baby will develop a vernix caseosa coat, but this coat will be rinsed away during his first bath.
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.
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.