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This is the development of the womb baby from week to week

Although there are changes every week, the developmental stage of the uterus is generally divided into several quarters or a three-month period. Come on, identify the main points of your fetus and baby's development to make it easier to detect if there are abnormalities or disorders in your pregnancy.

The development of a baby in the womb begins after conception occurs. Self-fertilization usually occurs only two weeks after the last menstruation begins. Yes, menstruation is also part of pregnancy even though you cannot get pregnant this week. Your last menstrual date (first day of last menstruation / HPHT) will be used to predict the due date, adding 40 weeks from that date.


Then, this is a growth pillar that occurs in the third week to the last trimester of your pregnancy.



First quarter

In the third week, when the fertilized egg develops, an embryo and placental sac are formed. Blood cells are formed and hundreds of other cells develop, then blood circulation begins.

At the end of the fourth week, the fetal heart tube is present and can beat 65 times in one minute.

At the end of the first month, the fetal length is 0.6 cm, smaller than the grain of rice. You will also start experiencing symptoms of pregnancy, such as breasts that are easily tired and enlarged. Increased levels of the hormone HCG also cause menstruation to stop, and are generally used as a sign of early pregnancy.

In the sixth week, the face with a large circle for the eyes, nose, mouth, ears and lower jaw and throat has begun to form. And the fetus has begun to look curved like the letter C.

In the seventh week, the fetus begins to form hands and feet, and the size of the uterus has multiplied.

Within eight to ten weeks, the fetus has passed a critical period of organ development and its structure, measuring almost 3 cm, moves more and more like a human. This week, the baby matrix is ​​ready to be developed.

From the eleventh to thirteenth week, the baby's brain will develop rapidly, his kidney starts urinating and his fingers can clench like boxing. The baby's length will reach 8 cm. When entering the twelfth week, the baby's genitals have begun to form.

Second trimester

When entering the second trimester, the risk of spontaneous abortion will be reduced because the contents strengthen and grow. The weight of the baby in the womb reaches 42 grams with a length that reaches 9 cm. Your bones and skull are getting harder and your ability to listen increases. You can feel the kick and see what makes some expressions through ultrasound or special ultrasound.

In the fourteenth and fifteenth weeks, the sense of taste is formed and can detect light. The baby will experience accelerated growth in the sixteenth week and the genitals are well developed, so they can be seen during an ultrasound examination.

At week 19, the baby's uterus can hear your voice. When entering week 20, the baby will swallow more and produce a kind of fetal feces called meconium. Babies will look more like small humans at gestational age starting on week 22. You can also feel movement and start growing hair. The baby will gain weight because he already has fat.

At week 26, the baby starts breathing and secretes placental fluid (amniotic fluid), which is a good sign, because at the same time he is practicing breathing.

At week 27, your baby in the womb can open and close your eyes, suck on your fingers and even have hiccups. You can feel pleasure while doing this.

Third quarter

When entering the third trimester, the baby's weight can reach one kilogram with the muscles and lungs growing. His head continued to grow to keep up with the development of nerve cells in his brain. Your wrinkled skin becomes smoother because of increased body fat. You can blink, growing more eyelashes, nails and hair. In the last trimester, the baby's weight will increase, so that in general it can reach around 3 kg with a length of 48 cm.

On week 31, the baby's kick will feel stronger and may start to contract. An enlarged uterus can cause heartburn and difficulty breathing. You will also feel more uncomfortable in bed.

At 34 weeks, the central nervous system and lungs mature and the movements are not as frequent or as strong as before.

Babies from the uterus will go down to the pelvic area at the age of 36 weeks at birth approaching. You will experience vaginal discharge and vaginal contractions more often at week 37, and you should be aware of the symptoms of a condition called preeclampsia (complications of pregnancy characterized by hypertension and damage to fetal organs).

Your amniotic fluid is likely to break at 39 weeks. If this happens, it means that you will soon have labor. Contact your doctor, midwife or hospital immediately for your reference.

Don't worry if you lose the expected delivery date. This is something common. But you may have to go through an induction procedure if your pregnancy has reached 42 weeks. Talk to your doctor about a safe and appropriate delivery procedure for the condition of your pregnancy. Regular checks for babies in the womb also help identify abnormalities and problems that may occur in your baby.


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