No yolk sac at 6 weeks of pregnancy

Generally, when we go to the hospital for an ultrasound examination four weeks into the pregnancy, we can see the yolk sac, which means that the embryo's fetal heart has begun to develop. This is the condition for us to judge whether the fetus is normal. If the symptoms of the yolk sac are not seen for a long time, it is very likely that the embryo has died. We need to expel the dead fetus in time and conceive again. If we haven't checked the yolk sac at 6 weeks of pregnancy, you should wait until the 8th week to check again. If it still hasn't been found, you will need to have an abortion.

Is it normal to have no yolk sac at 6 weeks of pregnancy?

It is normal to have no yolk sac at 6 weeks of pregnancy. It is recommended to go for a follow-up check at 8 weeks of pregnancy.

Generally speaking, the yolk sac can be seen through B-ultrasound around 6 weeks of pregnancy. However, for some expectant mothers, the yolk sac cannot be seen at 6 weeks of pregnancy because they conceive late or their babies develop slowly. Therefore, if pregnant women do not see the yolk sac at 6 weeks of pregnancy, do not worry. Wait until 8 weeks of pregnancy for a follow-up check. If you can see the yolk sac and the fetal heartbeat and fetal bud at this time, it means that the fetus is normal.

2What is the yolk sac

The yolk sac is divided into the archenteron after the embryo develops body folds, including the intraembryonic archenteron and the extraembryonic yolk sac. The yolk sac contains a large amount of yolk, and the wall of the yolk sac is formed by the extraembryonic endoderm and extraembryonic mesoderm. The yolk sac is a membrane-rich sac located on the ventral side of the body that surrounds the yolk. The contracted part that communicates with the midgut of the embryo is called the yolk sac stalk.

The yolk sac is the predecessor of the embryonic bud and is formed earlier than the embryonic bud and fetal heart. Generally, when the embryonic sac can be seen, the yolk sac can almost be seen. The presence of the yolk sac means that the embryo can continue to develop.

3 Health Tips

Every pregnant woman has different physical fitness, different conception time and different pregnancy period, so the time to see the yolk sac is also different. So don’t worry too much. You can change hospitals or wait for a while before going for a follow-up visit.