Gestational sac size reference chart to help you understand embryonic development during pregnancy
Pregnancy is a crucial period in every woman\’s life. To put it more simply, it is the day when the fetus grows in your belly. For every expectant mother, it is very necessary to have an in-depth understanding of the development of the embryo. The gestational sac size reference chart can help expectant mothers intuitively understand the development of the fetus they are carrying. This article will explain the gestational sac size reference chart for everyone starting from the first day of pregnancy.
Early pregnancy
On the first day of pregnancy, the embryo begins its own growth and development. In the early stages of pregnancy, the embryo adheres to the endometrium and gradually differentiates into the germ layer, blastoderm, amniotic membrane, etc., completing the most basic development tasks. The gestational sac usually appears as a small sphere with a diameter of about 3 to 5 mm during this period. At this time, the human body still cannot feel the feeling of pregnancy and other side effects.
Next, the nutrients in the gestational sac begin to form, and some tissues in the uterine wall begin to deliver nutrients to the embryo.
Then the size of the gestational sac begins to slowly increase. As time goes by, the size of the small spheres in the gestational sac will gradually increase. By 4 to 5 weeks, the embryonic development process is already very active. The size of the gestational sac will be about the size of a grape, about 1.25 cm.
Second trimester
The second trimester is the most anticipated period of pregnancy, when the fetus is fully formed inside the mother\’s body. Women should also pay special attention to their body changes during this period. The size of the gestational sac will increase rapidly in the second trimester, so if prenatal examination is required, the doctor may also determine the size of the fetus through the size and shape of the gestational sac in order to accurately grasp the timing of the operation, the cutting method and other coordination issues.
At 6-7 weeks, the gestational sac will be about the size of an egg, about 2.5 cm long and 2.5 cm wide. During this period, the size of the pregnant woman\’s uterus will also increase simultaneously, and it will begin to become wider under the maternal bone.
Late pregnancy
The third trimester is the most difficult time of the entire pregnancy. As the fetus continues to grow and develop and the surrounding pregnancy tissue becomes edematous, pregnant women will feel heavy and have difficulty moving. In the later stages of pregnancy, the size of the gestational sac will be about the size of a cake, with a length and width of about 5 cm. It can be seen that the size of the gestational sac is in sync with the growth and development of the fetus.
In the third trimester, the fetus no longer occupies the entire gestational sac as it did in the first trimester. The fetus\’s head and limbs are obvious, and pregnant women may also notice fetal movements and other symptoms.
Summary
After the introduction of this article, I believe that everyone has a better understanding of the changes in the size of the gestational sac, and thus understands the growth and development of the fetus in the belly. Expectant mothers should take into account their own pregnancy conditions and follow the doctor\’s recommendations for pregnancy-related medical examinations and necessary maintenance to ensure the healthy growth of the fetus.
