Can I see the fetal heartbeat and embryo at seven weeks?

At the seventh week of pregnancy, which is about 50 days of pregnancy, under normal circumstances, the embryonic bud has been formed at this time. If it develops normally, you can see it when you go to the hospital for a check-up. But usually, the fetal heartbeat cannot be detected at seven weeks of pregnancy. If you want to check the fetal heartbeat, you usually have to wait until at least 60 days of pregnancy, so you can't be in a hurry at this time.

Can I see the fetal heartbeat and embryo at seven weeks?

In the early stages of pregnancy, although B-ultrasound cannot tell whether the baby is a boy or a girl, it can show the fetal embryo, fetal heartbeat, etc. How long does it usually take to see the embryo bud? Can I see the embryo bud and fetal heartbeat at seven weeks of pregnancy?

Can I see the embryo and fetal heartbeat at seven weeks of pregnancy?

Generally, you can see it. If the gestational sac implants late, you may not be able to see it. If you don't feel uncomfortable, you don't need to go for a prenatal check-up so early. You can go for a check-up at 12 weeks. By then, the baby will be fully formed and you can see it more clearly.

What is embryo bud

The embryonic bud and fetal heart refer to the first two weeks of the development of the fertilized egg, which is called the pregnant egg. Later, various organs gradually form. Before 8 weeks of pregnancy, it is called the embryo (or fetal bud); the third to first month and four weeks of pregnancy is called the fetal bud period.

The first month of pregnancy is the embryonic stage, during which the new life grows the fastest in its life. The sperm and egg combine at the end of the second week of pregnancy. About 4 days after fertilization, the sperm and egg, which have split into cell clusters, travel along the fallopian tube to the uterus. In the third week, the cell mass sheds its outer membrane in preparation for implantation. By the fourth week, the blastocyst has been firmly implanted in the uterus. During this period, the prototypes of the fetal nervous system and circulatory organs (the basic tissues) have almost appeared, and the liver begins to develop significantly from this period; the prototypes of the eyes and nose have not yet been generated, but the prototypes of the mouth and chin can be seen; the umbilical cord connected to the mother also begins to develop from this period.

Abnormal embryonic development

It is the most common cause of early miscarriage, and miscarriage caused by chromosomal abnormalities accounts for about 50-60%.

Placental abnormalities

Due to incomplete development of the trophoblast, degeneration of the placental villi, or the placenta being attached too low, fetal-placental circulation may be impaired, leading to miscarriage.

Fetal development standards

4 weeks pregnant: The fetus is only 0.2 cm. The amniotic cavity is formed just after the fertilized egg has implanted and its volume is very small. Ultrasound cannot show clear signs of pregnancy.

5 weeks of pregnancy: The fetus grows to 0.4 cm and enters the embryonic period. The amniotic cavity expands and primitive cardiovascular system appears, which may beat. B-ultrasound can show a small gestational sac, which occupies less than 1/4 of the uterine cavity, or a fetal bud can be seen.

6 weeks of pregnancy: The fetus grows to 0.85 cm, the head, brain alveoli, facial organs, respiratory, digestive, nervous and other organs are differentiated, the fetal sac is clearly visible on B-ultrasound, and the fetal bud and fetal heartbeat are seen.

7 weeks of pregnancy: The fetus grows to 1.33 cm. The embryo has the rudiments of a human being, with all body segments fully differentiated, limbs separated, and various systems further developed. B-ultrasound clearly shows the embryo and fetal heartbeat, and the gestational sac occupies about 1/3 of the uterine cavity.

8 weeks of pregnancy: The fetus grows to 1.66 cm. The fetal shape has been determined. The head, body and limbs can be distinguished. The head is larger than the trunk. B-ultrasound shows that the gestational sac occupies about 1/2 of the uterine cavity, the fetal shape and fetal movement are clearly visible, and the yolk sac can be seen.

9 weeks of pregnancy: The fetus grows to 2.15 cm, the head is larger than the body, the various parts are clearer, the skull begins to calcify, and the placenta begins to develop. B-ultrasound shows that the gestational sac almost fills the uterine cavity, the fetal outline is clearer, and the placenta begins to appear.

10th week of pregnancy: The fetus grows to 2.83 cm, all fetal organs have been formed, and the rudiments of the placenta are formed. B-ultrasound shows that the gestational sac begins to disappear, a crescent-shaped placenta is visible, and the fetus is active in the amniotic fluid.

11 weeks of pregnancy: The fetus grows to 3.62 cm, the fetal organs develop further, and the placenta develops. B-ultrasound showed that the gestational sac had completely disappeared and the placenta was clearly visible.

12 weeks of pregnancy: The fetus grows to 4.58 cm, the external genitalia begin to develop, any deformities will be revealed, and the skull calcification 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.