The yolk sac is a part of pregnancy in pregnant women. Generally speaking, the yolk sac will appear around 5 weeks of pregnancy, and it will not exceed this time point at the latest, otherwise there is a certain risk for pregnant women. At the 9th week of pregnancy, the yolk sac will develop. So, what is the size of the yolk sac at 9 weeks of pregnancy?
At 9 weeks of pregnancy, the yolk sac is already at its maximum length, with a diameter of around 35 millimeters. At this stage, which is still in the early stages of pregnancy, as long as the size of the yolk sac is not significantly different and there is no deformation, there is basically no problem. Pregnant women should undergo various physical examinations in the early stages of pregnancy. B-ultrasound can show the development of the fetus in the uterus, as well as the gestational sac and yolk sac.
After pregnancy, the yolk sac first appears, followed by the embryo and embryo core, so the presence of the yolk sac is also important. Its existence indicates that the development of the embryo is still good. The yolk sac reaches its maximum size at 9 weeks, but by the 10th week of pregnancy, it gradually shrinks and becomes smaller until it disappears.
The shape and size of the yolk sac vary at different gestational weeks. However, this is within the regulatory range, which is the standard for normal fetal development, so pregnant women still need to pay attention to the size and value of the yolk sac at different stages. The 9th week of pregnancy is a critical period for fetal development, and expectant mothers should supplement their diet with nutritious food. Balanced nutrition is essential for promoting healthy fetal development and is also a prerequisite for expectant mothers to have a safe pregnancy.
