The pregnancy month is 28 days, and there are 4 weeks in a month. According to medical regulations, the expected date of delivery is 280 days, that is, 40 weeks, from the first day of the last menstruation. If calculated by 40 weeks, the last 6 weeks of pregnancy is the stage of 35-40 weeks.
(Three-dimensional color Doppler ultrasound of 35-week-old infants)
35 weeks: at 35 weeks, the baby weighs about 2500g and is about 44cm； long; 36 weeks: At 36 weeks, the baby weighs about 2800g and is about 47-48cm long. 37 weeks: At 37 weeks, the baby weighs about 3000g and is about 49 cm long. At 38 weeks: 38 weeks, the baby weighs about 3200g and is about 50cm long. 39 weeks: at 39 weeks, the baby weighs about 3200-3400 g; 40 weeks: At 40 weeks, the baby weighs about 3200-3700g and is about 49-54cm long.
According to the above data, ta's baby will gain 700- 1200 g in the last 6 weeks. The body length will increase by about 5- 10cm.
The last six weeks of pregnancy can also be said to be the time when the baby develops rapidly. The baby's "violent period" is 7-9 months. In the last six weeks, the baby's nervous system will also mature, and the baby's internal organs will gradually develop and improve. At 37 weeks, the baby will be regarded as a full-term baby, and the lungs and other respiratory organs will be mature. Most babies can breathe spontaneously even when they are born at this time (the lung is the last mature organ of the baby). In the last 6 weeks, the baby's fat continues to increase, and slowly the baby will become "plump", and the fetal fat and fluff covering the baby will gradually fall off ~
In the last six weeks, the baby grew bigger and bigger, almost "filled" the whole uterus, and the amount of amniotic fluid reached an upper limit. There is no room for amniotic fluid to increase in the uterus. At this time, the baby's activities will be restricted, so some mothers will feel that the baby's fetal movement has decreased after 35 weeks of pregnancy. Although the baby's fetal movement has decreased, the strength has increased, and the baby may feel uncomfortable when kicking. Sometimes it hurts. This is also because the upper limit of amniotic fluid reduces the "cushion" for buffering the baby's kick, so the mother will have obvious discomfort when the baby kicks. (The situation that the baby's fetal movement is reduced in the third trimester cannot be generalized, because some babies are more active, and even in the third trimester or near delivery, the baby's fetal movement is still not reduced).
After 37 weeks, the baby will be a full-term baby, which indicates that Ta may come out to see her mother before the due date, so mothers should pay more attention to their physical changes after 37 weeks. (Just because the baby is full at 37 weeks doesn't mean that Ta will stop growing, nor does it mean that Ta is completely ready to live in the outside world. )
(Three-dimensional color Doppler ultrasound of 40-week-old infants)
Simply put, the baby gained 700-1200g in the last 6 weeks; The body length will increase by about 5- 10cm, and the baby's body length and weight are only approximate values. Many healthy babies will be slightly different from the above values. For example, Mo Ma is pregnant herself. When she is pregnant for more than 8 months, her baby weighs about 5 kg and is born at 38 weeks +4 days. At birth, it was 7 kg and 42 Liang. In short, under normal circumstances in the third trimester, mothers should have a prenatal examination once a week. As long as the test results are normal, mothers can wait for the baby to start. About 37-39 weeks, my mother needs to have a B-ultrasound examination. At this time, it is time to evaluate the delivery mode of mothers.
During the whole pregnancy, the fastest growth of fetal weight is in the third trimester. After 28 weeks, the weight of the fetus began to advance by leaps and bounds, which was a bit incredible.
In the 28th week of pregnancy, the fetal weight is about 1000g, and in the 29th week of pregnancy, the fetal weight is about 1250g, which is very fast, so even in the second trimester, the fetus will suddenly grow up after the third trimester, the brain will also grow rapidly, the various organs of the body will continue to improve, and the body fat will begin to increase slowly.
How much can the fetus grow in the last six weeks? During the whole pregnancy, the fetal weight increased the fastest in the third trimester. In the third trimester, the fetal weight of 7-9 months increases the fastest. In these two months, the fastest growth of the fetus is 28-32 weeks. Some fetuses can gain about 350 grams or more per week, so even in a short month, the weight of the fetus can increase by 1-2 kg. Fetuses at 33-36 weeks also grow rapidly. Although it is not as fast as last month, it is not weak now, and the weight gain of the fetus can reach about 200-300 g per week.
The whole pregnancy is 40 weeks, and the last six weeks refer to 35-40 weeks. As the expected date of delivery approaches, the growth rate of the fetus will slow down. After all, it has reached a peak. If this growth continues, the pregnant mother's uterus will not hold up.
1. During the 35-36 weeks of pregnancy, the growth rate of the fetus is still very fast, basically reaching 200-300 g per week. At 35 weeks of pregnancy, the fetal weight is about 2800 g, and at 36 weeks of pregnancy, it is about 3000 g.
2. During 37-38 weeks of pregnancy, the fetal weight growth will slow down in these two weeks, with the weekly weight increase of about 100-200 g, the fetal weight of 37 weeks of pregnancy, 3000g, 38 weeks of pregnancy and 3200 g.
3. 39-40 weeks of pregnancy, has reached the last two weeks of pregnancy. At this time, the fetus is full-term, and the weight growth rate is slow, but the fetal brain is still developing, and the fetal lung is the latest organ, but even if the fetus is born, it can easily cope with the life outside the uterus. At 39-40 weeks of pregnancy, the fetal weight can increase by about 50 50-100g per week, and the fetal weight is about 3400g.
However, each fetus is a different individual, with different development speed and weight. As long as the fetal weight is within the normal range, pregnant mothers can safely wait for the full-term delivery of the fetus. The weight of the fetus is inseparable from the weight of the pregnant mother. The weight gain of pregnant mothers in the third trimester should not exceed 10 kg, 3 kg per month and 1 kg per week.
What is the relationship between fetal weight gain and it? 1. Nutrition intake. The growth and development of the fetus is inseparable from nutrition, but the fetus itself can't eat anything. In the womb, the fetus is just swallowing amniotic fluid and practicing breathing. All nutrients need to be provided by placenta through umbilical cord, which is the nutrition that pregnant mothers need to choose. If pregnant mothers eat some nutritious food, such as milk, eggs, lean meat, vegetables, fruits and so on. And a balanced diet, not picky eaters, can absorb all kinds of nutrients needed by the fetus, then the fetal nutrition will be sufficient and comprehensive, the growth rate will naturally be fast, and the weight gain will be ideal. But if the pregnant mother is partial to food, she only eats meat or vegetables for a long time, or just eats some foods without nutrition. In this case, not only the fetus, but also the pregnant mother herself may be malnourished, and the fetus may grow slowly and have a low weight. Some mothers especially like sweets after pregnancy, or some high-calorie foods, and do not control the amount, which can easily lead to high blood sugar of pregnant mothers and overweight fetuses. Therefore, if you want to make the fetal weight more ideal, pregnant mothers should adjust their diet structure appropriately.
2. Maternal absorption. After pregnancy, due to the influence of hormone levels, the digestive function of pregnant mothers will decline in the first trimester and will gradually recover after the second trimester. Under normal circumstances, as long as the pregnant mother is not picky about food and has a balanced diet, the fetus can get enough nutrition and its weight can easily keep up. However, some pregnant mothers have poor gastrointestinal function, poor digestion and weak absorption ability before pregnancy. Even if they eat the same nutrients, the fetus won't get so much. Some mothers can't absorb nutrition normally because of the influence of diseases. Without the support of nutrients, the weight growth rate of the fetus is naturally not so fast.
3. Genetic factors. Some babies look bigger when they are born, and some babies are smaller. In fact, fetal weight is also closely related to parents' inheritance. If both parents are tall, the fetus will not be much worse. If the parents are very young, the fetus will not be very big because of the genetic factors of parents. Newborn babies are all about the same height, generally 50cm, but some babies are born with small skeletons and some have big skeletons. Relatively speaking, a baby with a big skeleton will weigh more.
Let's just say that the lazy mother's two babies have a particularly severe morning sickness when they are pregnant with Dabao, and they can't eat anything at all. Basically, they are not starved to death. After the baby is born, the hands and feet are thin and long, and the skeleton is small. Even today's Dabao still belongs to the kind of tall and thin, with long hands and feet. When I was pregnant with Bauer, my morning sickness was also very serious, but my appetite was better. With the experience of having one child, you should eat more when you are pregnant with a second child. Bauer weighed 7.2 kilograms when he was born, and his skeleton was much bigger than that of his brother. Compared with a baby weighing 7 kg in the same ward, it looks much bigger, even if it is not fat, its weight is not much different.
In fact, pregnant mothers don't need to worry too much about the weight of the fetus. As long as the pregnant mother can eat and drink normally during pregnancy and is not picky about food or partial eclipse, the weight of the fetus will not be too bad. And even in the last six weeks, if the fetus is too small, it can still turn the tide. If it is too hungry, it can grow to more than 1 kg. If targeted nutrition is strengthened, it will definitely be more than 1 kg. On the contrary, if the fetus is overweight, it is necessary to consider adjusting the diet structure.
If the baby is born in the 40th week of the expected date of delivery, then the last 6 weeks of pregnancy is about 34~40 weeks. Of course, the baby may start at any time after term.
How much can the fetus grow in the last six weeks?
The last six weeks of pregnancy, that is, from August to 10, during which the development of various organs of the baby's body tends to mature, and these six weeks will probably grow in all aspects:
In short, in the last six weeks of pregnancy, the baby's growth rate is also very fast. Expectant mothers are advised to eat a balanced diet, have regular check-ups, exercise moderately, and most importantly, control their weight.
How much can the fetus grow in the last six weeks? What should pregnant women pay attention to? Before that, let's learn about the development of 29-40 weeks.
At 29-32 weeks of pregnancy, the fetus is about 40 cm tall and weighs about a pumpkin, about 1.800 g. The hair of the fetus began to fall off. When there is strong light outside, the baby will blink, and the more developed muscles and nerves make the fetal movement intense. 8- 10 months of pregnancy is the fastest period of fetal brain development. In order to build a smarter brain, pregnant mothers actively eat foods that can promote brain development, such as deep-sea fish, blueberries, purple potatoes, avocados, linseed oil and olive oil.
At the end of 33-36 weeks of pregnancy, the fetus is about 45 cm tall and weighs about 2200 grams, weighing as much as/kloc-0 per Chinese cabbage. The growing body makes the uterus more crowded. Around the age of 34, the lung development is complete, even if the baby goes to live outside the uterus prematurely, it is completely fine. Form a 35-week sleep cycle, when the fetus can wake up like a newborn for a while and then go to sleep. At the end of 8 months or the beginning of 9 months, the fetus will enter the basin, adjust its position and prepare for delivery.
After the fetus enters the basin, the diaphragm and lungs squeezed by the uterus will be liberated, heartburn and chest tightness will be alleviated, but bladder compression will be more serious, leading to frequent urination and even leakage of urine. In order to preview the delivery, false contractions come uninvited, and the abdomen will be tight and hard. Just rest more and stay up late less.
Pregnant for 37-40 weeks 10 month, the fetus is about 50 cm tall and weighs about 3000 grams, weighing like a watermelon. The development is basically completed, but the functions of the main organs and internal organs are still being further improved. The fetal head has been fixed in the pelvic cavity, and the activity space is small, so the fetus shrinks. Pregnant mothers should pack just the right bags, pay attention to some signs of labor, such as menstruation, amniotic fluid rupture, uterine contraction interval (1 every 4 minutes to go to the hospital), and be prepared for delivery at any time.
In the last six weeks, that is, from 35 weeks to 40 weeks, the height of the fetus at 35 weeks is about 44 cm, and the weight is about 2.2kg. The height of the fetus at 40 weeks of pregnancy is about 50 cm, which is about 3-3.5kg, which means that it can increase by 0.8- 1.3kg in these six weeks.
In the early pregnancy, the nervous system is mainly developing, and in the early pregnancy, the basic organs and a shell are mainly growing. It can be said that after the early pregnancy, our fetus is small and complete. At the 0/2 week of pregnancy/kloc-,NT is already a formed fetus. In fact, Taibao is not a fetus before 10 week of pregnancy, but only a small embryo in terms of growth and development, and a fetus cannot be regarded as a fetus before 1 1 week of pregnancy.
Characteristics of fetal development: nervous system and organs with small weight develop first in the early fetal period.
At 12 weeks of pregnancy, the fetal weight is only about 16 grams, about 6 cm from head to toe. It can be said to be very small. The gestational age has exceeded 1/4, but the fetal weight is only 1/200 of the birth weight. It can be said that it is a very small fetus.
Some pregnant mothers didn't gain weight at all in the first trimester, and even lost several pounds because of morning sickness.
Since the second trimester, the mother's weight has increased steadily, and the weight and length of the fetus have also increased. Generally speaking, in the second trimester, from 13 to 28 weeks, and from 15 weeks, the fetus grows from 20g to1200g at 28 weeks, and its weight increases by 60 times. And the length has become nearly 40 cm.
The third trimester is the fastest period of fetal growth. Some fetuses are born prematurely at 7 months, generally only weighing more than 3 kg. At 8 months, those born prematurely are only about 4 kg, so they generally need to live in an incubator, so the weight of the fetus grows faster in the later period.
In the third trimester, the fetal weight is similar, with an average increase of 200 grams per week.
In the last six weeks, the child has gained a lot of weight. From the 35th week, the fetus mainly grows subcutaneous fat, muscles and bones. We see that the premature baby looks like a wrinkled little old man, while the full-term baby looks much rounder and smoother, mainly because the premature baby has less subcutaneous fat and less muscle.
Generally, 35 to 40 weeks is the last 6 weeks of the fetus. Of course, if the child is born early, say, 38 weeks, then it is 33 weeks to 38 weeks.
Take 35 weeks to 40 weeks as an example. At 35 weeks, the child is 48.5 cm long and weighs 2,500g, while 36 is 49 cm and 2,700g, 37 is 49.5 cm and 3,000g, 38 is 50 cm and 3150g, and 39 is 565,438.
The weight of the fetus is only an approximation. Most fetuses don't grow according to the textbook. It can be said that most fetuses grow according to the nutritional status of their mothers during pregnancy. Some mothers eat too much when they are pregnant, or have gestational diabetes when they are old, which will lead to an oversized fetus. Some full-term babies even have more than 8 kg of giant babies, which will lead to caesarean section.
Therefore, it is necessary to have a balanced diet during pregnancy. Don't think that it is good to eat more when you are pregnant. It's really good to control your weight after pregnancy. The fetus is not big enough to be born, and the child grows and develops quickly after birth, and its weight is easy to catch up.
It is suggested that it is better to control the child's weight at about 6 kg.
The last six weeks involved in this question refer to 35~40 weeks, during which there is an important time watershed, that is, 37 weeks, and the fetus is full-term and may start at any time.
Let's see how much the fetus can grow at 35~37 weeks. The weight of the fetus ranges from about 2500 grams to about 3 kilograms. The length of the fetus is about 45 cm to 49 cm. The average diameter of the biparietal lobe increased from 8.70 0.55 to about 9.0 and 0.63.
Let's see what the fetus is at 37 weeks to 40 weeks. The weight of the fetus is increasing at a rate of about 200 grams per week. The body length will also change from about 49 cm to about 54 cm.
So in fact, after 37 weeks of full term, the fetus may start at any time, so don't worry too much about how many kilograms and centimeters it can rise in the last six months. Especially for the length of femur, what is the value of biparietal diameter? These are not too tangled, because there are errors in the measurement, so the data is only a rough reference. As long as a large range of qualified, the doctor said no problem, do not worry at all.
In the last 6 weeks, pregnant women only need to do the following things. Eat on time and supplement nutrition. For doctors who say that the fetus is too small, you can eat more.
If personal physical conditions permit, take more walks, but be accompanied by your family and don't go to crowded and noisy places.
Do physical examination on time and observe fetal movement at any time.
Keep a good mood and be at ease for labor.
For pregnant mothers, the baby's development and health are issues of great concern throughout pregnancy, especially in the third trimester, and the weight of the fetus is also an important criterion to judge whether the fetus is developing normally.
Generally speaking, during the last 6 weeks of pregnancy from 34 to 40 weeks, the growth rate of the fetus is very amazing. So how much can the baby grow in the last six weeks? Because the situation of each pregnant mother is different, the specific growth of the fetus varies from person to person. But for most pregnant mothers, the fetal weight can basically increase by 1~3 kg in the last 6 weeks. Most newborns weigh about 6-8 kg at birth, so at 34 weeks of pregnancy, pregnant mothers should adjust their diet according to the results of prenatal examination. If the fetal weight has exceeded the standard before this, then the diet and fetal weight should be controlled in the last six weeks of pregnancy, otherwise being too big and obese will not be conducive to smooth delivery in the future. However, for those pregnant mothers whose fetuses are thin and the nutrition is not up to standard, it is necessary to seize the last six weeks to supplement various nutrients so that the baby's weight can achieve the ideal result.
The fastest time for fetal growth is 9 months in the third trimester, followed by 8 months and the month near delivery. If the due date is 40 weeks, then the last 6 weeks will be 35-40 weeks.
How long can the fetus grow in the last six weeks of pregnancy? In the last six weeks of pregnancy, the fetus will be more and more round, the fetal hair will be longer and longer, the development of the kidney and liver of the body has been completed, and the hearing has been fully developed.
What will happen to pregnant women in the last 6 weeks of pregnancy? Abdominal prolapse is obvious.
First-born babies usually enter the basin about 2 weeks before labor, but some babies enter the basin earlier. However, the first child is rarely born at the same time. The second child is different, and the fetus is usually in labor. When the pregnant woman's abdomen falls obviously with the following symptoms, it proves that the fetus has entered the basin.
Have pudendal pain
Near the expected date of delivery, a series of changes will take place in the maternal body. In order to deliver the fetus smoothly, the ligament at the pubic symphysis will gradually relax, and the fetal head will be heavily embedded in the pelvis when it enters the basin, so the gravity at the pubic symphysis will increase invisibly, so the pubic pain will become more and more obvious in the third trimester. In order to avoid this situation, pregnant mothers can do this:
make up calcium deficiency
The fetus will store enough calcium for the body before birth. Once pregnant women lack calcium during pregnancy, it will affect the eruption time of fetal teeth. Usually, half of the calcium in the fetus will be stored within two weeks before birth, so the more it reaches the third trimester, the more it needs to be supplemented.
Once pregnant women lack calcium, it will not only aggravate pudendal pain, but also cause calf cramps.
Be careful of two things in the last six weeks of pregnancy. First, edema.
In the third trimester, under the weight of the uterus, the venous blood return of lower limbs will be blocked, that is, the bigger the uterus, the more severe the compression and the more serious the edema of lower limbs. Therefore, the more you reach the third trimester, the more you need special attention. You can exercise properly, do more massage and have a light diet. Take preventive measures in advance.
Second, stretch marks
Many mothers have stretch marks a few days before the baby is born. I thought I didn't have it during the whole pregnancy, but I didn't expect it to grow out just after I let my guard down. Because the fetus grows fastest in the ninth month of pregnancy, it is more difficult to relax in the third trimester. Remember to use the abdominal belt in advance, the olive oil won't stop.
In the third trimester, many mothers will be anxious and even worried. They can try to distract themselves from it. It is also important for the baby to keep calm.
The 34th week of pregnancy is the third trimester. There is no hard and fast rule about how much weight a pregnant mother will gain every week. Generally, it will increase by about 0.5kg per week. The specific growth rate is related to diet or absorption.
In the third trimester, the fetus gains about 100g to 150g per week, that is, the baby gains about 1 kg per month. Normally pregnant, but the baby can grow about 1.2- 1.5 kg in the last 6 weeks.
Pregnant women should control their dietary intake and control their calorie intake while ensuring a balanced nutrition. Excessive weight gain will increase the risk of pregnancy, such as pregnancy-induced hypertension and diabetes, and the probability of macrosomia will also increase, which will bring difficulties to production.
In most people's eyes, the last six weeks means 35-40 weeks of pregnancy, but for those babies who give birth at 39 weeks of pregnancy, it means 34-39 weeks of pregnancy, while for those babies who give birth at 4 1 week of pregnancy, it means 36-4 1 week of pregnancy, which means that the duration of the last six weeks is different.
Turning to the topic, no matter what the last six weeks are, the baby is still in the third trimester. In the third trimester, the fetus will gain about 200-300 grams per week, some will be less, some will be more, but only about 200-300 grams per week. In the last six weeks, the fetus can grow about1200-1800g.
As for how much it can grow, it is related to your diet, umbilical cord and placenta. Overnutrition often suggests fetal weight gain, too thin umbilical cord often suggests fetal weight gain and loss, and sail placenta suggests fetal weight gain and loss.
To sum up, the average baby can gain about 1200- 1800g in the last 6 weeks, depending on diet, umbilical cord and placenta. Good luck with your pregnancy.