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Stages of Pregnancy and Symptoms by Month |1-9 Months of Pregnancy in Pictures| Stages of Fetal development

In the following article, we present the Stages of Pregnancy by week, which it goes through during pregnancy.

During the long stages of pregnancy, the fetus develops rapidly, from insemination to the whole baby. Learn about the stages of fetal development per week in the following:

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Fetal development stages or Stages of Pregnancy by week

Here are the most Stages of Pregnancy that accompany the growth of the fetus weekly in the following:

The second week of pregnancy

It is the week in which ovulation occurs; during this stage, the cell is fertilized to produce a long and complex journey of embryo formation.

The fertilized egg begins to multiply into multiple cells during its journey up the fallopian tube to the uterus to settle there.

The third week of pregnancy

In the 3rd week of Stages of Pregnancy, The fertilization of the fertilized egg implanted in the uterine lining is greatly accelerated.

The egg at this stage is called a blastocyst, and it produces pregnancy hormones (hCG), which tell the ovaries to stop releasing eggs in the future.

Fourth week of pregnancy

Within the weekly stages of fetal development, the fertilized egg now officially becomes a fetus.

At this stage, it is the time of your period, and you can know the result of your pregnancy by using a home pregnancy test.

The fifth week of pregnancy

At this stage of pregnancy, the fetus resembles a tadpole, an amphibian, so there is no need to worry as your fetus develops very quickly inside your womb.

 At this point, the circulatory system begins to form, and your baby’s heart begins to beat during this week.

The sixth week of pregnancy

One of the fetus’s development stages by week is that its nose, mouth, and ears begin to form in the sixth week of pregnancy; not only that, but the fetus’s intestines and brain are also developing.

At this stage, your fetus is about the size of a lentil and is about 5 millimeters long.

The seventh week of pregnancy

Your fetus is increasing now and is doubling in size from last week, and the fetus still has a tail, but it quickly disappears within the stages of fetal development by the week.

You will notice your baby’s hands and feet starting to form during this week as well, which is now the size of a blueberry and is between 1.1-1.4 centimeters long.

The eighth week of pregnancy

One of the fetus’s development stages is that it begins to move in this week of pregnancy, but you will not feel this movement yet, as nerve cells start to form, and the airways extend from the throat to the developing lungs.

Your baby is now the size of a bean; it weighs about 1 gram and is about 1.6 centimeters long.

The ninth week of pregnancy

The physiology of your tiny fetus’s body is almost formed at this stage, it even has earlobes now, and the tail that accompanied your fetus is now gone.

Its weight has doubled to 3 grams and is the size of a grape, and its length is approximately 2.3 centimeters.

The tenth week of pregnancy

The growth and development of your fetus are completed from the early embryonic stage, but its skin is still transparent so far. At this week of pregnancy, it can bend its limbs, as its nails appear now.

Your baby at this stage is about the size of a Chinese orange, about 3.6 centimeters long, and weighing about 4 grams.

The eleventh week of pregnancy

By this stage, your baby is almost formed, your baby starts kicking and stretching, and even hiccups as the diaphragm develop, but you won’t be able to feel any of these yet.

This week, your fetus is about the size of a fig, about 4.1 centimeters long, and weighing about 7 grams.

Twelfth week of pregnancy

Your baby will be able to open and close his fingers soon, and he may be able to master the sucking process. If you gently poke your belly, your baby will feel it now, but you won’t feel his reaction until this moment.

Your baby this week is about the size of green lime, weighs 14 grams, and is about 5.4 centimeters long.

Thirteenth week of pregnancy

This is the last week of the first trimester of pregnancy, and your baby now has a distinctive imprint of his fingers, and the blood vessels and organs of his body can be seen through his transparent skin.

If you are pregnant with a female, your ovaries now contain more than 2 million eggs.

This week, your baby looks like a pea, is 7.4 centimeters long, and weighs about 23 grams.

Fourteenth week of pregnancy

You have now entered the second trimester of pregnancy, and the fetus’s brain is starting to work, and it can use its facial muscles, and your fetus’s kidneys are working now, and you may be able to see him sucking his finger through an ultrasound scan.

Your fetus is now the size of a lemon, and its length is 8.7 centimeters, weighing approximately 43 grams.

Fifteenth week of pregnancy

At this stage of fetal development, by week, your baby’s eyelids are still closed, but he feels light. If you point a light source at your belly, your baby will run away from him.

Did you know that it may be possible to see the gender of the fetus in this week of pregnancy? Did you attend the names of his sons or daughters?

Within the stages of fetal development by week, your fetus is now the size of an apple, and its length is 10.1 centimeters, while its weight has reached 70 grams.

Sixteenth week of pregnancy

Your fetus’s head is starting to form now, but its hair is not visible until this moment, its feet are more developed at this stage, and its ears are close to their original position.

Your fetus is now the size of an avocado, its length is 11.6 centimeters, and its weight is approximately 100 grams.

Seventeenth week of pregnancy

Your fetus can move its joints now, its bones are starting to harden more and more, and the umbilical cord is increasing and becoming thicker than before.

At this week of pregnancy, your baby is about the size of a turnip, about 13 centimeters long, and weighing more than 140 grams.

Eighteenth week of pregnancy

Your fetus is now freely extending its hands and arms, and you can feel this movement; and within the stages of the fetus’s development weekly, a layer of myelin forms here at this stage around the nerves.

Your baby is about the size of bell pepper, about 14.2 centimeters long, and weighing 190 grams.

Nineteenth week of pregnancy

The stages of the fetus’s development continue every week. To develop at this stage, its five senses, and it may be able to hear your voice, try talking to your fetus and singing to it.

At the nineteenth week of pregnancy, your fetus is about the size of a tomato, over 15.3 centimeters long, and weighing approximately 240 grams.

The twentieth week of pregnancy

Your fetus can swallow now, and its digestive system produces meconium, or what is known as primary stool (meconium).

Your baby this week is about the size of a banana, about 16.4 centimeters long, and weighing 300 grams.

Twenty-first week of pregnancy

Your baby is moving well in the womb now, and he is kicking you constantly, so you can tell when your baby is active during this stage.

Your baby this week has become the size of a carrot, about 26.7 centimeters long and weighing 360 grams.

Twenty-second week of pregnancy

Within the stages of fetal development by week, the shape of your fetus now resembles its final shape, but the color of its eyes has not yet formed.

Your fetus is now the size of a cucumber, approximately 27.8 centimeters long, weighing 430 grams, or half a kilogram.

Twenty-third week of pregnancy

Your baby’s ears are now better at hearing sounds, and he can now distinguish some of them.

Your baby looks like a mango at this week of pregnancy is 28.9 centimeters long and weighs approximately 501 grams.

Twenty-fourth week of pregnancy

The fetus continues to develop during this stage. All the organs are present now, but some of them need to grow and develop.

Your fetus is now the size of corn cob, and its length is 30 centimeters, while its weight has reached 600 grams.

Twenty-fifth week of pregnancy

Your baby’s skin begins to get rid of the wrinkles in it, and his hair begins to grow within the stages of fetal development every week.

Your fetus is the size of a turnip now, its length is about 34.6 centimeters, and its weight is approximately 660 grams.

Twenty-sixth week of pregnancy

Your baby is now inhaling amniotic fluid, which helps him develop his lungs.

Your fetus is now the size of green onion, and its length is 35.6 centimeters, weighing approximately 760 grams.

Twenty-seventh week of pregnancy

This is the last week of the second trimester, and your fetus sleeps and wakes up according to a set schedule; your fetus’s brain is now active, and its lungs can function outside the womb even though they are not fully developed.

Your baby is now the size of a flower, measuring 36.6cm in length and weighing about 875g.

Twenty-eighth week of pregnancy

You are now entering the last trimester of pregnancy, and your fetus has developed its sense of sight, and it can close and open its eyes.

Your fetus at this stage is the size of an eggplant, and its weight is approximately one kilogram, while its length is about 36.7 centimeters.

The twenty-ninth week of pregnancy

At this stage of pregnancy, the baby’s muscles and lungs are fully developing in preparation for labor outside the womb, and his head is growing, allowing his brain to develop and grow.

Your baby is about the size of celery, weighs about 1.1 kilograms, and is about 38.6 centimeters long.

30th week of pregnancy

Your baby continues to grow more and more in the womb within the stages of fetal development every week; at this stage, you must have chosen a beautiful name for your fetus; if you haven’t yet, use the baby names tool to help you that.

Your fetus looks like a cabbage, its length is about 40 centimeters, and its weight is 1.4 kilograms.

Thirty-first week of pregnancy

Your fetus can now turn its head from side to side, and it continues to grow and develop.

Your fetus is about the size of a coconut, weighs about 1.5 kilograms, and is approximately 41.1 centimeters long.

Thirty-second week of pregnancy

Your weight continues to increase as your baby gets bigger. You have to know that he will increase in size very quickly from this stage.

The size of your fetus is similar to a jicama bean, its weight is about 1.7 kilograms, and its length is 42.2 centimeters.

The thirty-third week of pregnancy

The bones of your fetus’s skull are not yet solid to allow it to pass through the birth canal, and most likely, your baby is now in the exit position in the womb, that is, head down.

Within the stages of fetal development by week, your fetus here is about the size of a pineapple, and its weight is about 1.9 kilograms, and its length is 43.7 centimeters.

Thirty-fourth week of pregnancy

The central nervous system continues to develop in the fetus, and the baby can be born at this stage without health problems and continue and grow normally.

Your fetus this week is about the size of a cantaloupe, and its average weight is between 2.1-2.3 kilograms, and its length is about 45 centimeters.

Thirty-fifth week of pregnancy

Your fetus’s kidneys are fully developed, and its liver processes some waste at this stage, and your womb becomes less spacious for your fetus, and you feel its beating more now.

Your fetus is similar in size to a honey melon, weighs about 2.3 kilograms, and is 46.2 centimeters long.

Thirty-sixth week of pregnancy

Your baby must have turned around in preparation for the birth stage; check with your doctor about this. You should bring the bag that will accompany you to the hospital and the supplies you need.

During this week of fetal development, the size of your fetus is similar to romaine lettuce, and its weight is about 2.6 kilograms, and its length has reached 47.7 centimeters.

The thirty-seventh week of pregnancy

Your due date is very close, and all of your fetus’s systems and organs are well developed for this stage.

Your baby is the size of Swiss chard, weighs about 2.8 kilograms, and is about 48.9 centimeters long.

Thirty-eighth week of pregnancy

Your fetus’s nails are now fully grown and may scratch itself inside the womb. The fetus can now breathe independently, and it swallows the amniotic fluid, causing hiccups sometimes.

At this stage of pregnancy, your fetus is about the size of a garlic leek, and its length is about 49 centimeters, and its weight may reach 3 kilograms.

The thirty-ninth week of Stages of Pregnancy

Your baby’s physical development is now complete, and the hair that covered his body during the stages of fetal development is disappearing every week.

Your baby is about the size of a watermelon, weighs about 3.2 kilograms, and is approximately 50.7 centimeters long.

40th week of Stages of Pregnancy

If you passed your due date, you do not need to worry. You and your fetus are safe, as some women suffer from ovulation at a later stage than others.

The size of your fetus is now complete, and it resembles a pumpkin, and its length may reach 51.5 centimeters, and its weight is approximately 3.4 kilograms.

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