The gestational sac was not seen until 80 days into the pregnancy

The fetus is not formed immediately after pregnancy. Instead, a gestational sac is formed first, which then continues to grow and gradually forms the fetus. Therefore, the detection of the gestational sac during pregnancy also plays an important role. The size of the gestational sac is different at different times. Some pregnant women do not see the gestational sac until 80 days into their pregnancy and are very worried about abnormalities. So, what is the reason for seeing the gestational sac only after 80 days of pregnancy? Let’s take a look below.

Is it normal to see the gestational sac only after 80 days of pregnancy?

It is clinically possible that the gestational sac is not seen until 80 days into pregnancy, because the pregnancy time is calculated according to the last menstrual period. However, some people may ovulate late and the actual pregnancy time is short. In this case, the pregnancy time should not be calculated according to the menstruation, but should be calculated according to the size of the gestational sac.

What is the size of the gestational sac at 80 days of pregnancy?

1. After more than 80 days of pregnancy, the size of the gestational sac in the uterine cavity is 6.0*3.2, the embryo is 1.5cm long and primitive cardiovascular pulsation is visible. At 80 days of pregnancy, the fetus grows to about 4.58 cm, the external genitalia begin to develop, any deformities will be revealed, and the calcification of the skull becomes more complete. The skull halo is clear, the biparietal diameter can be measured, obvious deformities can be diagnosed, and the internal organs tend to become more complete afterwards.

2. At 80 days of pregnancy, the fetus grows to 3.62 cm, the fetal organs further develop, and the placenta develops. B-ultrasound showed that the gestational sac had completely disappeared and the placenta was clearly visible.

3. If the gestational sac is too small, or no gestational sac is seen after 80 days, then the pregnancy may need to be terminated. Whether the pregnancy can continue can only be determined after one week of dynamic observation. 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.