How big is the belly when pregnant for four and a half months

In order to assess whether the child is normal, in addition to combining uterine height and fetal abdominal circumference, the size of each diameter of the fetus measured by gynecological ultrasound should also be combined. It's not just about how big your abdomen is, the size of your abdomen is affected by your own weight. Let’s discuss how big the abdomen is when you are about four and a half months pregnant.

When the pregnant woman is four months pregnant, her belly is not very big, but it can be seen. At this time, the mother's weight will increase by 2 to 4.5 kg, and many clothes will no longer fit. At this time, the fetus is in a stage of rapid growth and development. The body length may grow from 13 cm to 17 cm at a rapid rate. The fetus weighs about 200 grams, and the eyes that were originally biased to the sides begin to converge forward. The fetus' bones are now similar to rubber-like cartilage and begin to harden gradually.

At this time, the girl's vagina, uterus, and bilateral fallopian tubes are already ready, and the boy's sexual organs can also be seen clearly. The baby's brain is at the peak of rapid development at this time. The brain nerves multiply rapidly, and the brain begins to divide specialized areas for the development of smell, taste, hearing, vision and touch. Yellow spots have also begun to appear in the fetus's eyes. In general, the fetus at this time is basically in adult shape.

The working ability index value of the baby in four months of pregnancy

The fourth month of pregnancy enters the second trimester. At this time, the baby's limbs are becoming more and more developed. His fingers can begin to clench with the palms, his toes and soles can bend, and his upper eyelids are still tightly closed. They already know how to listen to their parents. At this time, the facial muscles of the fetus begin to be exercised due to the stimulation of the head nerves. They can frown, squint, and do other postures in the belly. Although their hands and feet are not long enough, their body growth rate begins to be faster than the head, and their necks begin to become clearer. What's even more amazing is that at this time the fetus's respiratory tract gradually develops and they are actually learning to breathe. The baby in the womb can still burp at this time, but we can't hear it. They may even clench their fists, open their mouths, and suck their fingers.