What is the reason why the gestational sac does not grow?

It is said that pregnancy and childbirth are like 81 difficulties, and one always goes through all kinds of hardships during the process. Xiao Zhou, who just got pregnant, encountered the problem of the gestational sac not growing. So what does it mean when the gestational sac does not grow? Doctors tell us that women may be affected in conception and their ovulation period may be delayed due to excessive emotional tension and mental stress. So why doesn’t the gestational sac grow? What should we do if such a problem occurs?

What causes the gestational sac to fail to develop?

Generally speaking, a small gestational sac may be due to emotional tension, which may cause the expectant mother's menstruation to be delayed, ovulation to be delayed, and conception to be late, resulting in the gestational sac being smaller than the actual number of days of amenorrhea. For example, the menstruation has not stopped for 50 days, but the examination finds that the gestational sac is only about the size of a 40-day gestational sac. It is normal for the gestational sac to be small. As long as a dynamic examination for one week shows that the levels of chorionic gonadotropin and progesterone are gradually increasing, the gestational sac continues to grow, and the fetal bud and fetal heart gradually appear, it means that the small gestational sac is due to physiological reasons and the pregnancy can continue.

If the gestational sac is underdeveloped and smaller than normal due to infection with mycoplasma, chlamydia, rubella virus, etc. during pregnancy, the gestational sac is unhealthy and will eventually lead to miscarriage. It is best to go to a regular hospital for a curettage, find out the cause and treat it symptomatically, and then get pregnant again after one year.

Development of the gestational sac

Pregnancy is a complex process. After the egg is fertilized, it enters the uterine cavity, and the embryo and its appendages grow and develop rapidly until they mature. There will be different changes in each week of pregnancy.

4 weeks: The fetus is only 0.2 cm. The amniotic cavity is formed just after the fertilized egg has implanted and its volume is very small. Ultrasound cannot show clear signs of pregnancy.

5 weeks: The fetus grows to 0.4 cm and enters the embryonic period. The amniotic cavity expands and primitive cardiovascular system appears, which may beat. B-ultrasound can show a small gestational sac, which occupies less than 1/4 of the uterine cavity, or a fetal bud can be seen.

6 weeks: The fetus grows to 0.85 cm, and the head, brain alveoli, facial organs, respiratory, digestive, and nervous organs are differentiated. The fetal sac is clearly visible on B-ultrasound, and the fetal bud and fetal heartbeat are seen.

7 weeks: The fetus grows to 1.33 cm. The embryo has the rudiments of a human being. The body segments are fully differentiated, the limbs are separated, and various systems are further developed. B-ultrasound clearly shows the embryo and fetal heartbeat, and the gestational sac occupies about 1/3 of the uterine cavity.

8 weeks: The fetus grows to 1.66 cm. The fetal shape is determined, and the head, body and limbs can be distinguished. The head is larger than the trunk. B-ultrasound shows that the gestational sac occupies about 1/2 of the uterine cavity, the fetal shape and fetal movement are clearly visible, and the yolk sac can be seen.

9 weeks: The fetus grows to 2.15 cm, the head is larger than the body, the various parts are clearer, the skull begins to calcify, and the placenta begins to develop. B-ultrasound shows that the gestational sac almost fills the uterine cavity, the fetal outline is clearer, and the placenta begins to appear.

10 weeks: The fetus grows to 2.83 cm, all fetal organs have been formed, and the rudiments of the placenta are formed. B-ultrasound shows that the gestational sac begins to disappear, a crescent-shaped placenta is visible, and the fetus is active in the amniotic fluid.

11 weeks : The fetus grows to 3.62 cm, the fetal organs develop further, and the placenta develops. B-ultrasound showed that the gestational sac had completely disappeared and the placenta was clearly visible.