It is important to know the development of the fetus from month to month so that its growth is always monitored. The reason is, there are changes experienced by the fetus in the womb every month, both in terms of size, organs formed, to physical abilities.

This is the Stage of Fetal Development from Month to Month - In the first 4 weeks of pregnancy, pregnant women may not feel any pregnancy symptoms. The only sign of pregnancy that a pregnant woman can notice is the cessation of menstruation. Although sometimes pregnant women do not feel the symptoms of pregnancy, without realizing it, the fetus has begun to develop since conception.

Fetal Development in the First Trimester

The following are the stages of fetal development in the first trimester of pregnancy:

1. First month

After fertilization, the initial stage of embryonic development is the zygote. The zygote will go to the uterus and form a morula which is a group of cells that looks like a raspberry. Furthermore, the morula will go through several stages of embryonic development.

In the first month, the amniotic sac has begun to form to protect the embryo, as well as the placenta and the baby's blood cells. The body of the fetus has also begun to form, which is marked by the appearance of a facial area with a black circle in the middle. Later, these dark circles will develop into the eyes. At this gestational age, the jawbone, mouth, and throat of the fetus begin to form. At the end of the first month, the new embryo is the size of a grain of rice.

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2. Second month

In the second month, the bones and nervous system which includes brain tissue, spinal cord, and peripheral nerves have begun to form. The formation of the heart also begins to occur along with the circulatory system. In this month, the face of the fetus will continue to develop. In fact, the embryo of the ear has been seen, as well as the growth of his hands and feet. At the end of the second month, the embryo measures about 2.5 cm and weighs up to 9.5 grams.

3. Third month

In the third month, the internal organs of the fetus have begun to develop. The liver begins to produce bile, the urinary system begins to work, and the circulatory system also begins to operate. The reproductive organs of the fetus have begun to form. However, gender is still difficult to determine even though the examination is done by ultrasound.

By the end of the third month, the fetus already has arms, hands, fingers, legs, and feet. At this age, the gums and teeth will begin to develop, as well as the fingers and toes and ears. A 3-month-old fetus can also open and close its mouth and hands. The length of the body of the fetus at the end of the third month reaches about 7.5–10 cm, and weighs 28 grams.

Fetal Development in Second Trimester

Entering the second trimester of pregnancy, pregnant women can already hear the heartbeat of the fetus during pregnancy checks. In fact, pregnant women have started to feel the movement of the fetus. The following is the development of the fetus during the second trimester:

4. Fourth month

By the fourth month, the male fetus has a prostate, while the female fetus has started to have follicles in the ovaries. At this gestational age, fetal bones are growing.

On the head already visible pattern of hair. His eyes were already able to move slowly, but could not open. At this age also the position of the fetal ear is in accordance with its place and the fetus' mouth can begin to suck. The length of the fetus at the end of the 4th month usually reaches 15 cm, with a body weight of about 100 grams.

5. Fifth month

When it's the fifth month, the entire skin of the fetus is covered with a white layer as a protective amniotic fluid. This white layer will be released by itself shortly when the fetus is born. In the fifth month, the fetal muscles have developed and the fetus begins to move. Hair has grown on the head and the back and shoulders are covered with fine hair which will disappear after the baby is born. The length of the fetus at the end of this month is about 25 cm, and weighs 225–450 grams.

6. Sixth month

At the age of 6 months, the fetal eyelids are fully formed and the eyes can open. Veins are visible because the fetal skin is still very thin and wrinkled. In this month, the fetus is able to respond to sound with movement. In fact, pregnant women can also feel the movement of the fetus in the form of hiccups and smooth kicks repeatedly. At 6 months of gestation, the length of the fetus is generally about 30 cm, with a weight of about 900 grams.

Fetal Development in the Third Trimester

In the third trimester of pregnancy, the moment to meet your baby is getting closer. Fetal development as it enters the last trimester includes:

7. seventh month

The fetus can already respond to light, feel pain, hear sounds, and change its body position. In addition, the fat tissue in his body is also growing rapidly this month. In the seventh month, the length of the fetus is generally 30–36 cm, with a weight of 900–1,800 grams.

8. eighth month

Entering the age of 8 months, the organs in the fetus have developed better. One of the organs that have been formed but not yet perfect is the lungs. Meanwhile, parts of the brain are developing more rapidly than the previous month.

In this month also body fat reserves will increase along with the increasing age of the fetus. The fetus has also moved more actively which is characterized by a firmer kicking motion. At this gestational age, the length of the fetus reaches 46 cm, and weighs 2.27 kg.

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9. ninth month

At the age of 9 months, the fetus's body is more fully formed. The eyes and ears are able to function properly. The fetus is also more sensitive to touch and light and the lungs are almost perfect. The length of the fetus is generally 46–51 cm, weighing about 2.5–3.2 kg. At this age, the head of the fetus is facing the birth canal and the buttocks have occupied the upper part of the mother's womb to prepare for the birth process.

The development of the fetus from month to month will occur gradually, so pregnant women must maintain their health. Pregnant women also have to routinely carry out pregnancy check-ups to the midwife or doctor according to the recommended schedule. That way, the condition of pregnancy is maintained and delivery goes smoothly.

This is the Stage of Fetal Development from Month to Month