After pregnancy, many pregnant mothers may be very curious, when did the fetus "take human form"? What is the situation with your baby at different stages? So, let's take a look at the wonderful changes in each new life.
First trimester (1st week of pregnancy to 12th week of pregnancy)
The first week of pregnancy cannot actually be considered pregnancy, because the calculation cycle of pregnancy is determined according to the last menstruation, so at this time the egg is still an egg, the sperm is still a sperm, they have not met, nor have they produced a fetus.
In the second week of pregnancy, the sperm meets the egg, combines to form a fertilized egg, and makes its home in the womb, beginning to prepare for development.
In the third week of pregnancy, the fertilized egg resembles a small fish with a long tail and is about 1 mm long. At the time of the four weeks of pregnancy, the fertilized egg was still "a fish", and the body doubled to about 2 mm. At 5 weeks, the fertilized egg can be called a fetus, but it is not human-shaped, but resembles a hippocampus, and the fetus is about 4 mm old.
At 6 weeks of pregnancy, the fetus is about 6 mm in size, and this week will be a milestone development, because from this week, the fetus will begin to develop into a human form, the face will begin to differentiate, the internal organs will begin to form, the heartbeat will begin to appear, and so on.
At 7 weeks of pregnancy, the fetus is already as large as a centimeter, gradually differentiating into the head and limbs, and there are already people, but at this time, the "small tail" of the fetus has not disappeared, feeling like a "little dragon man".
At the eighth or ninth week, the fetus does not change much, but the small tail begins to disappear. This stage is also a critical stage in fetal development.
At 10 weeks of pregnancy, the organs of the fetus have been formed, and at 11 weeks, some details of the fetus begin to develop, such as the nails, hair, genitals of the fetus. At 12 weeks, the fetus was already 9 centimeters tall, some organs began to enter the working state, and the hands and toes of the fetus were separated.
At this point, the first trimester ends. That is to say, the fetus in the eighth week of pregnancy of the pregnant mother, it is basically considered to form a "human-like child".
Second trimester (13th week of pregnancy to 27th week of pregnancy)
In the second trimester, the fetus is relatively stable. At 13 weeks of pregnancy, the fetal vocal cords and tooth roots begin to form, more internal organs begin to enter the working state, at this time the baby, may have begun to move, but because the baby is only 10 centimeters so large, pregnant mothers are difficult to feel. At 14 weeks, the genitals of the fetus begin to show significant differences.
At 15 weeks of pregnancy, the fetus begins to grow eyebrows, and the fetal hair on the body gradually increases, and in this week, the pregnant mother will feel the joy of fetal movement for the first time.
At 16 weeks of pregnancy, the fetal limbs gradually develop and the circulatory system begins to work normally. At 17 weeks, subcutaneous fat begins to form.
At 18 weeks of pregnancy, the fetus begins to have its own fingerprints.
At 19 weeks of pregnancy, the fetus's limbs develop stronger, fetal movements become more pronounced, and during this week, the sensory organs will develop rapidly. At 20 weeks of pregnancy, it feels like the development has entered a critical period, and the eyes can move, but the fetus still hasn't opened its eyes. At 21 weeks, the fetal nails and lips are developed, and sometimes it will start to eat fingers. At 22 weeks, the fetus already looks like a real little baby, but the skin is a little wrinkled. At 23 or 24 weeks, the baby is working hard to develop.
At 25 weeks of pregnancy, the baby has become very large, at this time the baby is about 31 cm tall, the brain ushers in a period of high-speed development, the differentiation of brain cells is intensified, and the brain volume begins to grow. At this time, the baby will already be idle and play with the "toy" (umbilical cord).
At 26 weeks of pregnancy, the fat accumulation rate of the fetus is accelerated, the baby's hearing system is gradually perfected, and it begins to respond to the sound, at this time the mother and father can start to talk to the fetus. At 27 weeks, the baby is fat, his hair is growing, and his sense of taste begins to form.
At this point, the second trimester is over, and the fetus is already a relatively sound baby.
Third trimester (28th week of pregnancy to 40th week of pregnancy)
At 28 weeks of pregnancy, the fetus's eyelashes gradually develop, breathing movements begin to appear, and they are able to open and close their eyes. At 29 and 30 weeks, the fetus constantly strives to accumulate fat and develop and grow.
At 31 weeks of pregnancy, the development of the fetus slows down, and some details of the development are gradually perfected. By 32 weeks, 33 weeks, the fetus had become almost like a newborn, and the skin had turned pink.
At 34 weeks of pregnancy, the fetus has begun to prepare for birth and the head begins to enter the pelvis. At 35 weeks, the fetal nails continue to grow longer and subcutaneous fat has formed.
At 36 weeks of pregnancy, the fetus at this time, the hair on the body and the fetal fat on the skin slowly fell. At 37 weeks, the fetus is still growing, breathing begins to become intense, and the constitution continues to increase, and if the fetal position is not correct this week, it will be difficult to correct.
At 38 weeks of pregnancy, the skin begins to become smooth, the fetus begins to (fetal stool), and the placenta slowly ages.
At 39 weeks of pregnancy, the fetus has completed its development.
At 40 weeks of pregnancy, the fetus can already meet with its mother. Of course, according to each person's constitution, the specific delivery time may have some deviations, but 3 weeks in advance or 2 weeks later is normal, and the babies that can really be born on time at 40 weeks are actually very few.
When the doll first came into the world, it basically looked very ugly, such a situation is not because he is ugly, but because the doll's brain melon seeds are squeezed by the birth canal and deformed, and the doll's body also has fetal fat and some dirt generated during childbirth, and the body may also be blue and purple, and so on.
But pregnant mothers should not be deceived by the appearance of the little one, because in a few days, you may see the cutest and most beautiful baby in the world.
Parenting message
During pregnancy, the most important thing for pregnant mothers is to maintain a good attitude, a healthy psychology, a regular pregnancy test, and develop a good dietary habit, work and rest habits, exercise habits, living habits, etc.
In this way, the fetus can develop smoothly step by step, no matter when the fetus first takes human form, it is actually not important, what is important is that the baby can be born smoothly, can smoothly meet with the mother, and start a happy life.
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