Real picture of the size of the fetus at 15 weeks

At 15 weeks of pregnancy, the baby's biparietal diameter is about 2.9 cm, the baby's head circumference is about 11.0 cm, and the fetal abdominal circumference is about 8.6 cm. The fetus' femur is about 1.9 cm long. The fetus is 16 cm long, 12 cm long from top to bottom, and weighs about 110 grams. The sex of the fetus can be determined from its reproductive organs, and its hair has already grown. The fetus has already begun to breathe, the skin is thin and dark red, and there is no fat yet. Most pregnant women can already actively feel the baby's fetal movement at this time.

Generally, the fetus is unstable in the first three months of pregnancy, and vaginal bleeding and abdominal pain are very likely to occur, which are signs of miscarriage. At 15 weeks of pregnancy, the fetus is relatively stable for more than three months. Generally, Down syndrome screening is required between 15 and 20 weeks of pregnancy. Fetal movements begin to occur at 16 weeks. You need to pay attention to observe fetal movements at ordinary times. Although it is relatively stable, you still need to pay attention to rest during pregnancy, avoid intense activity, and pay attention to observe fetal movements. If you have any uncomfortable symptoms, you need to go to the hospital for observation in time.

To check the size of the fetus, you can use color Doppler ultrasound to accurately measure the standard values ​​of the fetal biparietal diameter and femoral length. Or you can also use the pregnant woman's fetal abdominal circumference and uterine height, as well as the fetal masses felt by the doctor to estimate the size of the fetus. The fetal biparietal diameter is used to check the size of the fetus, and there is a formula for calculation.

The calculation formula is: fetal biparietal diameter multiplied by 900 minus 5200. For example, if the fetal biparietal diameter is 8.6 cm, then the fetal weight is approximately 2540 grams, which is about 5.8 jin. However, because the standard value of the fetal biparietal diameter in color Doppler ultrasound examination will have a certain deviation, the fetal weight will also have a certain deviation.