There may be many uncomfortable symptoms during pregnancy because of the poor development of pregnant embryos. Pay more attention to rest after pregnancy. The expected date of delivery can be calculated from the time of the last menstruation to ensure the healthy development of the fetus. The following are the reasons for the poor development of pregnant embryos. Welcome to read and share!
Causes of gestational embryo dysplasia 1 1, endocrine disorders.
Early embryonic development requires three important hormone levels, namely estrogen, progesterone and human chorionic gonadotropin. As a mother, if the endocrine imbalance in the body leads to insufficient endogenous hormones and fails to meet the needs of embryos, it may lead to abortion and miscarriage.
2. Immune factors
The embryo or fetus during pregnancy is allogeneic, because the fetus is a combination of parents' genetic material and cannot be exactly the same as the mother. If the immunity between the mother and the fetus is not appropriate, it will lead to the mother rejecting the fetus.
3. Abnormal uterus
Both the intrauterine environment and the overall uterine environment may have an impact on embryo development. The internal environment is the endometrium. Too thin or too thick will affect implantation. The external environment refers to abnormal uterine development, such as uterine cavity stenosis caused by single uterus, double uterus and double horn uterus. When the uterine cavity volume is less than normal, it often leads to abnormal embryonic development.
Causes of poor embryo development 2 How does the development of the fetus proceed after pregnancy?
1, pregnant for one month
At this time, the fetus can't be called a fetus. This time is called embryonic period, and its fertilized egg is called embryo or embryo. Because the fertilized egg is still dividing at this time and has not yet formed a certain shape, the embryo can only be seen by B-ultrasound at this time.
2. When you are pregnant for two months.
The embryo of the fetus already looks like a baby. By two months, hands and feet have been formed, as have eyes, ears, nose tip and tongue.
3. When you are pregnant for three months.
Fetuses can see fingernails and have clear fingers and toes. At this time, the fetal head grew up and the neck grew. The eyes moved to the front of the face, the whole body was covered with a layer of fluff, and the external genitalia began to differentiate. During this period, fetal bones began to develop rapidly and harden, preparing for future development.
Four, four months.
The skin of the fetus is very thin and transparent, and the blood vessels under the skin can be seen. The joints of the limbs have been formed and the bones have been further developed. At this time, the fetal legs have exceeded the length of the arms, the fingernails have been formed, and the joints can move.
During this period, the sex organs of the fetus are mature enough to distinguish sex with the naked eye, and of course, B-ultrasound can also find out more. The fetus began to breathe through his chest, and he began to suck his thumb, the fetal heart that existed in this period. If mother is careful, she may see fetal movement.
Five, five months.
If you are pregnant with a boy:
If you are pregnant with a boy, you may not have morning sickness at the beginning of pregnancy, and the baby's heartbeat is about 140 times per minute. At the same time, your stomach may be round, just like basketball. Besides, your front body will gain a lot of weight.
In the fifth month of pregnancy, the color of your areola will deepen. At this time, you may like to eat salty or sour food and high-protein food. Your legs will get cold easily and leg hair will grow faster during pregnancy. The skin on your hands will be very dry. Generally, your urine will be yellowish, with a runny nose and a headache.
If you are pregnant with a baby girl:
If you are pregnant with a baby girl, you will have vomiting at the beginning of pregnancy. Your baby's heartbeat is at least 140 times per minute, and your body, mainly your hips and back, has gained more weight. Often the left chest is bigger than the right chest. At this time, the abdomen will bulge, a bit like watermelon. Pregnant mothers often like sweets, especially sweet fruits, and also like sweet drinks such as orange juice.
When you are five months pregnant, your mood may be unstable. The breast grows rapidly and the urine is dark yellow.
6. When you are six months pregnant.
The fetal body length is about 19cm, and the weight is about 350g g g. At this time, the fetal skin is wrinkled. Don't think this is a bad phenomenon. In fact, this is the room left by the fetus for the growth of subcutaneous fat in the future.
Six-month-old fetus, after 22 weeks, the fetus will look slippery, as if the skin is covered with a greasy substance, which is actually fetal fat. The main function of fetal fat is to protect the fetus from injury after long-term immersion in amniotic fluid. Fetal fat usually appears at the age of six months, and may still exist until birth. During this period, fetal teeth are also developing rapidly, mainly the tooth germs of permanent teeth are developing rapidly to prepare for fetal teeth.
7. When you are seven months pregnant.
The body of the fetus is 36cm and weighs about 900 g ~1300 g. At this time, the inner ear and brain of the fetus have been completely connected, and the ability to distinguish sounds has improved a lot, and it is also very sensitive to sounds. Although the retina of the seven-month-old fetus is not fully developed, it can already feel the light and is very sensitive to it.
8. When you are eight months pregnant.
The fetus is about 42cm-46cm in length and 2kg-2.7kg in weight. The fetus keeps growing and its bones develop stronger. At this time, the fetus can already hear the sound outside the mother. With the growth of the fetus, the skin of the fetus looks not so wrinkled, but plump.
9. When you are nine months pregnant.
The fetal brain is very developed. For external stimuli, not only the body will react, but also the face will react. Through the expression of the fetus, we can see his likes and dislikes Fetal eyes are fully mature and respond obviously to light outside the mother. The organs in the fetus are also mature and the skin is shiny. After 9 months, the fetus has dropped to the lower abdomen and is ready for delivery.
After nine months of pregnancy, because the fetus is already very big and the pregnant woman's abdomen is very full, so the pregnant mother can't eat too much at a time, eat more meals and eat less. Moreover, the digestive function of pregnant mothers will decline, so it is easy to cause constipation. Eat more potatoes, seaweed and cellulose-rich vegetables.
10, ten months pregnant.
Now the pregnant mother has entered the final stage of pregnancy, and the development of the fetus in the uterus is basically mature. From this weekend, your fetus can become a full-term baby, which means that your baby may be born at any time, so you must make good prenatal preparations at this time, including the knowledge of natural delivery, the hospital where the baby was born, the bag that has not been available just now, and so on.