Why is the gestational sac getting smaller?

In the early stages of pregnancy, a fertilized egg is formed in the pregnant woman's body. But after several months of growth, the gestational sac has taken shape. However, the gestational sac changes according to the pregnant woman's own condition. Once the pregnant woman's emotions are affected, the gestational sac will also change accordingly. Therefore, you should always pay attention to the actions of pregnant women to avoid abnormal situations. Why does the gestational sac become smaller?

Firstly, due to emotional tension and other reasons, pregnant women's menstruation is delayed, ovulation is delayed, and conception time is late, resulting in a gestational sac that is 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 after one week shows that the levels of chorionic gonadotropin and progesterone are gradually increasing, the gestational sac is continuing to grow, and the fetal bud and fetal heartbeat gradually appear, it means that the small gestational sac is due to physiological reasons such as delayed ovulation and late conception, and the pregnancy can continue.

Secondly, due to poor development of sperm and eggs, infection of mycoplasma, chlamydia, rubella virus in pregnant women, or exposure to toxic and harmful substances during pregnancy, the gestational sac may be poorly developed and smaller than normal. For pregnant women who experience the above situation, the gestational sac will continue to grow as time goes by during pregnancy, but no fetal bud or fetal heartbeat can be seen. In this case, the gestational sac is unhealthy and will eventually lead to miscarriage.

Finally, it should be noted that the gestational sac becomes smaller in the early stage of pregnancy and then grows larger. The gestational sac generally does not become smaller and then grow larger. As long as the fetal heartbeat can be seen, it means it is normal. If the gestational sac becomes smaller, it may be related to the cessation of fetal development. You need to go to the hospital for regular check-ups. If the fetus stops developing, you need to choose a uterine curettage for treatment in time.

The process of formation of gestational sac size

An empty gestational sac means that the embryo has not developed well. There are many reasons for this, such as poor sperm quality and environmental factors that can affect embryonic development. Sometimes an empty gestational sac can also occur if the fertilized egg is late. The gestational sac is only seen in early pregnancy. For women who have regular menstruation of 28 to 30 days, after 35 days of amenorrhea, the gestational sac can be seen in the uterine cavity by B-ultrasound. The diameter of the gestational sac is about 2 cm at 6 weeks of pregnancy and about 5 cm at 10 weeks of pregnancy. It is normal for the gestational sac to be located at the fundus, front wall, back wall, upper part, or middle part of the uterus; it is normal for it to be round, oval, and clear in shape; if the gestational sac is irregular in shape, blurred, and located in the lower part, and the pregnant woman also has abdominal pain or vaginal bleeding, she may have a miscarriage.

The gestational sac is the primitive placental tissue, a small embryo wrapped by the amniotic membrane and vascular network. The gestational sac is the initial form of pregnancy. At that time, the fetus has not yet formed, and the fetal heartbeat is already there when the embryonic bud appears. In the second week, the embryo implants in the endometrium. When it develops into the second germ layer, a large cavity called the primary yolk sac appears on the ventral side of the embryonic disc. The yolk sac continues to shrink and degenerate during embryonic development, but the extraembryonic mesoderm on the wall of the yolk sac is the earliest origin of the formation of blood cells, blood vessels and primitive germ cells - the gestational sac, where the fetus will grow in the future.

Since the discovery of the gestational sac has proved that a fetus can survive outside a woman's uterus, it is no longer a dream for a man to become pregnant. However, it goes against the laws of nature, and the medical community is not keen on studying it.