A 28-week-old fetus in the womb is usually about 37~38cm and weighs about 1005~1150g.
The average biparietal diameter is 6.69~7.89cm, the average abdominal circumference is 22.45~25.22cm, and the femur length is 4.8~5.9cm. The fetus continues to hoard subcutaneous fat, the brain structure is more complex, the amount of brain tissue is continuing to grow, the brain activity is very active, and it is trying to practise its breathing movements.
At 28 weeks, the fetus has developed a sleep cycle and so learns to dream. The fetus’s eyes begin to learn to open and close, and it learns to suck and will put its hand in its mouth for sucking. At the same time, the fetus has grown hair and the auditory nervous system is fully developed.
From the 28th week of pregnancy belongs to the late pregnancy, is an important period of fetal brain development, this stage of the fetal brain cells at this time rapid proliferation and differentiation, the volume increases, so, pay attention to balanced nutrition.
In the late stage of pregnancy, you should increase the frequency of maternity checkups, once every two weeks, and pay attention to the fetal movement.