How big is the baby at 6 months of pregnancy?

When pregnant for six months, the pregnant woman is in the middle stage of pregnancy, which is also a stage of rapid development of the fetus. In order to ensure the development of the fetus, the pregnant woman must ensure comprehensive nutrition. She must not be picky about food. In addition, she must pay attention to dietary taboos, such as not eating raw, cold and particularly greasy food. Eating too much can easily lead to indigestion. So when pregnant for six months, how big should the fetus in the belly be to be considered normal?

How big is the baby at 6 months of pregnancy?

The process of pregnancy is full of joy, but it is also a very hard process. In the sixth month of pregnancy, pregnant mothers will find that they are very pregnant, their lower abdomen is becoming more and more prominent, and the center of gravity of the body will move forward. At this time, prenatal check-ups are very necessary for pregnant women. So according to the examination results, what is the normal size of a fetus at 6 months of pregnancy? Generally speaking, the weight changes of babies in the sixth month of pregnancy are as follows:

The first week of the sixth month of pregnancy: The fetal size is approximately 22 cm and the fetal weight is approximately 400 grams.

The second week of pregnancy in the sixth month: the fetus is about 25 cm in size and weighs 500 grams

The third week of pregnancy: the fetus is about 30 cm and weighs 600 grams

The fourth week of pregnancy: The fetal size is approximately 32 cm and the fetal weight has increased to about 800 grams.

The fifth week of pregnancy: The size of the fetus is about 35 cm, and the weight of the fetus has increased to about 900 grams.

A six-month-old fetus is 30 cm long. It has grown hair, eyebrows, eyelashes, and strong bones, but has no subcutaneous fat, so it is very thin. The fetus can move its body freely in the amniotic fluid, and can even lie upside down. Vernix caseosa begins to adhere to the skin surface. Bones become stronger, hair becomes longer, and eyebrows and eyelashes begin to grow. The facial shape is also clearer, and he looks like a real person. The sounds of the fetus can be heard with a stethoscope. The pregnant woman's belly is close to the shape of a typical pregnant woman, with the fundus of the uterus 18 to 21 cm high.

Color Doppler Ultrasound of the Fetus at 6 Months of Pregnancy

We all know that pregnant women should actively cooperate with prenatal checkups, but mothers also know that the four-dimensional color ultrasound examination will be affected by many factors such as fetal position, different gestational periods, placenta, amniotic fluid, etc. Therefore, if you undergo four-dimensional color ultrasound too early, the fetus may not be able to see some tissues clearly because of its small development, and the purpose of screening for deformities cannot be achieved. The result is almost the same as that of three-dimensional color ultrasound technology, which is not of much significance.

Therefore, it is generally recommended that pregnant women undergo examinations during the following pregnancy periods. The best time for four-dimensional color ultrasound is 23-24 weeks of pregnancy (that is, 5-6 months of pregnancy). Because this is the period when the fetal brain develops rapidly, the fetal structure has been formed, the fetal size and amniotic fluid are moderate, the space for movement in the uterus is larger, the fetal bone echo is less affected, and the image is clearer. Therefore, a six-month-old fetus can undergo four-dimensional color ultrasound, and this is also the best time to do it.

The sixth month of pregnancy is from 21 to 24 weeks. It can be seen from the picture of a male fetus at six months of pregnancy that the skin of the fetus is still wrinkled and red, and it looks like a little old man. Teeth also begin to develop at this time, mainly the tooth germs of permanent teeth. The fetus swims in the amniotic fluid in the uterus and kicks the uterus with its feet, causing the amniotic fluid to vibrate. Nails also begin to grow on the fingers and toes. At 21 weeks, he was able to hear. Blood vessels are forming in the lungs and the respiratory system is being established rapidly. Your baby will continue to swallow at this time, but he cannot yet defecate. At this time, if the uterus contracts or is under external pressure, the fetus will kick the uterine wall violently to convey this information to the mother.