What happens when you are 5 weeks pregnant?

By the fifth week of pregnancy, some people may not have detected it yet. At this time, the fetus has grown to 0.4 cm and looks like a small seahorse. It is about to officially enter the embryonic period. The mother's body has not changed at the beginning, and the symptoms are relatively mild, with only slight fatigue.

What happens when you are 5 weeks pregnant?

At this point, the fetus grows to 0.4cm and looks more like a small seahorse. This week the fetus officially enters the embryonic period. It is now composed of three germ layers - ectoderm, mesoderm and endoderm. These three germ layers will form the baby's organs and tissues in the future. As the embryo develops, the amniotic cavity expands accordingly. During this week, the fetus's primitive cardiovascular system appears and begins to pulsate. At this time, the gestational sac cannot be distinguished by the naked eye, but it can be seen from B-ultrasound that the gestational sac occupies less than 1/4 of the uterine cavity.

Cells are differentiating to form the major organs of the fetus (such as the kidneys and liver), and the neural tube begins to develop. The neural tube is differentiated from the upper layer of the embryo, the ectoderm, and will develop into the baby's brain, spinal cord, nerves, spine, etc. The ectoderm will also form the baby's skin, hair, nails, mammary glands, sweat glands and tooth enamel. The fetal heart and circulatory system begin to differentiate and form from the mesoderm.

In fact, during this week, the baby's little heart has begun to divide into ventricles, started beating, and can pump blood. The mesoderm will also differentiate into the baby's muscles, cartilage, bones, subcutaneous tissue, etc. The third layer, the endoderm, will form the baby's lungs, intestines, early urinary system, as well as the thyroid, liver and pancreas. At the same time, the initial forms of the placenta and umbilical cord, which supply nutrients and oxygen to the fetus, have begun to work.

Early pregnancy guide for expectant parents

5 weeks pregnant, what the expectant mother needs to know about fetal health care, how to safely spend the eventful 2 months of pregnancy, 5 weeks pregnant: adequate nutrition and psychological prenatal education, the surprise of confirming pregnancy on the 36th day of pregnancy, early pregnancy test strip trial diagram, share the baby development indicators that should be paid attention to in the 5th week of pregnancy

The body shape and weight of pregnant mothers will not change much this week. Some pregnant mothers may be slightly heavier than last week, about 0.03kg, but most mothers will not feel the changes in their body shape and weight.

You may experience pregnancy symptoms such as nausea, morning sickness, breast tenderness, fatigue, and frequent urination. At this time, you are moody and anxious; you have a keen sense of smell and hate cigarettes, alcohol and other beverages; you are easily tired and sleepy, and feel general fatigue and exhaustion. If your period is usually regular, but this week your period didn't arrive as expected, then you may be pregnant.