Seven weeks of pregnancy: The embryo is about 1cm long and weighs about 4 g. It has the shape of human embryo and can distinguish the shape of head, body, hands and feet, but it also has a small tail, which will gradually disappear with the growth of pregnancy, like tadpoles.
Eight weeks of pregnancy: the fetal length is about 1.2cm, and the weight is about 6 g, and the embryonic development speed is getting faster and faster. There is a prototype, and the head and limbs can be seen clearly, but the fetal head is bigger than the trunk. Last week's little tail is slowly disappearing. So the fetus at 53 weeks pregnant is very small, just like a small grape, but it already has a human shape, with limbs, body, head and maybe a small tail. The skin is very thin, and you can see the blood vessels on your body. It's lovely.
Look at the B-ultrasound report of a friend who is pregnant for 53 days. The gestational sac is 23* 14mm, the yolk sac and germ are clearly visible, and the original heart tube beat (fetal heart) can also be seen; A friend said she was 53 days pregnant. Why can't they see the germ?
Mainly related to the implantation of fertilized eggs sooner or later. If the implantation is late, the fetus will be smaller. When doing B-ultrasound examination, the gestational sac is generally clearly visible, but the embryo bud of the fetal heart is still unclear. At this time, pregnant mothers don't worry, wait a few days. Check it; If it is implanted early, you can clearly see the gestational sac, fetal heart and embryo bud when you go to the prenatal examination. If you are twins, you can see them completely.
This is the development period of fetal organs. For the healthy development of the fetus, pregnant mothers should adjust their mentality, not get angry, pay attention to diet, exercise and sleep, and be sure to stay away from teratogenic substances.