Picture of gestational sac at 20 days of pregnancy

The body of a pregnant woman will not change immediately after pregnancy. The changes in the body of a pregnant woman begin with the growth and development of the fetus, and are not irregular changes. The growth and development of the fetus is closely related to the gestational sac. The gestational sac is the initial shape of the baby, so the size of the gestational sac can be seen directly during the initial prenatal examination. So, will a gestational sac appear when the baby is 20 months pregnant?

Will there be a gestational sac at 20 days of pregnancy?

1. 4 weeks: The fetus is only 0.2 cm. The amniotic cavity is formed just after the sperm and egg combine and the embryo implants, and its volume is not large. Ultrasound cannot clearly show signs of pregnancy.

2.5 weeks: The fetus grows to 0.4 cm and enters the test tube embryo stage. The amniotic cavity expands, initial cardiovascular and cerebrovascular diseases appear, and heart beats may be present. B-ultrasound can show a small gestational sac, which occupies less than 1/4 of the uterine cavity, or the embryonic bud and fetal heartbeat can be seen from it.

3. Theoretically, the gestational sac can be seen on the 35th day, but there are large individual differences, and the gestational sac can be seen on the 30th day in some cases. Generally, the gestational sac can be seen after 5 weeks of pregnancy. However, for some women with longer menstrual cycles, late ovulation and late implantation, it may not be visible at this time. Most people recommend doing an ultrasound after 6 or 7 weeks of pregnancy. At this time, not only can you see the gestational sac, but you can also see whether there is a fetal bud, fetal heartbeat and fetal heartbeat. It is recommended not to go for a check-up too early. Since you are pregnant, you should protect the baby well and go for a check-up after three months. It is not good to do a check-up too early.

What does the gestational sac look like to be considered normal?

1. The gestational sac is the initial shape of the baby in the belly during pregnancy, so the gestational sac can only be seen in the early stages of pregnancy. At this moment, the baby has not yet been born, but the fetal heartbeat has already occurred when the embryo bud and fetal heartbeat appear. The test tube embryo is embedded in the uterine wall in the second week. When it grows to the second germ layer, a large cavity appears in the internal oblique muscle of the embryonic disc, which is called the primary yolk sac. The yolk sac continues to shrink and deteriorate during the embryonic development process, but the extraembryonic mesoderm on the inner wall of the yolk sac is the original origin of red blood cells, blood vessels and primitive cells - the gestational sac, where the future fetus will emerge.

2. The location of the gestational sac is at the fundus, front wall, back wall, top, and middle of the uterus, which is all normal. The shape of the fetal sac is circular, oval, and clear, which is normal. If the fetal sac is irregular in shape, unclear, and located at the bottom, and the pregnant woman also has abdominal pain or vaginal bleeding, it may be a miscarriage, and the pregnant woman must pay attention to induced abortion.

Pregnant women should know what they should and should not do during pregnancy. Only in this way can they reduce the risk of doing things that are detrimental to the growth and development of their children during pregnancy. In many cases, miscarriage occurs because pregnant women do not understand their own health conditions and matters that they should pay attention to during pregnancy, which leads to miscarriage or even more serious problems.