No yolk sac seen at 60 days of pregnancy

I believe that every expectant mother is more concerned about the development of the fetus, which is related to whether the fetus is normal and to avoid deformities. However, we determine whether the fetus is normal through B-ultrasound, and there are many things in the results of B-ultrasound that we do not understand or recognize. For example, when you do B-ultrasound and find that the 50-day fetus still does not have a yolk sac, you should pay attention to it. This may be due to embryonic maldevelopment or embryonic cessation of development, and it must be dealt with in a timely manner.

What if I haven't seen the yolk sac yet after 50 days of pregnancy?

There is a possibility that the embryo is maldeveloping, or there is a possibility that the embryo has stopped developing. It may also be that the menstruation is irregular and the number of days without menstruation is relatively short. It may be due to insufficient progesterone or late conception. You can continue to observe and go to the hospital for an ultrasound examination after a week. At the same time, blood tests are needed to make a clear diagnosis.

How long does it take for the yolk sac to appear?

In early pregnancy, the first thing that can be observed by ultrasound in the gestational sac is the yolk nest, which is an important transport system between the embryo and the mother. Generally speaking, what expectant mothers are most concerned about is the time when the yolk nest appears. So, in which week of pregnancy will the yolk nest appear? This is a question that many expectant mothers are concerned about. Let me tell you about it below.

Before the embryo matures, the yolk nest supplies nutrients to the oocyst and is the transport system between the embryo and the mother, with functions such as nutrition, hematopoiesis, metabolism and immunology. At the fifth week of pregnancy, the yolk nest will separate from the primitive intestine and gradually degenerate. By the 7th week, it has become a small sac with a diameter of less than 5 mm, existing on the surface of the embryo. This is also a phenomenon that occurs in repetitive systems.

The answer to why the yolk sac is not seen after 50 days of pregnancy has been given above. In fact, the yolk sac may not have grown yet, or the embryo may not develop well. The yolk sac supplies nutrients to the embryo. Without the yolk sac, the fetus cannot grow. Therefore, people with this condition must have a timely check-up to gain an accurate understanding.