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What is dangerous during pregnancy?
Last reviewed: 07.07.2025

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Almost every woman, having learned that she will become a mother, asks herself: what is dangerous during pregnancy? Unfortunately, pregnancy does not always proceed without complications, which can sometimes be very dangerous for the life of both the mother and the child.
The nine months it takes for a little person to form inside a woman is quite a long period, during which a woman faces many dangers.
There are situations when even before conception, some risk factors appear that can significantly complicate the course of pregnancy, but in other cases, everything largely depends on the woman herself, on how seriously she will take her new condition and monitor her health. During pregnancy, if any symptom appears, it is better to immediately consult a specialist and prevent serious complications.
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Dangerous periods during pregnancy
Every woman should have an idea of what is dangerous during pregnancy. During the nine months of waiting, a woman is visited by many thoughts, and not all of them are pleasant. Worries about the health of the baby, the upcoming birth, etc. are in vain in many cases. However, during the period of waiting for the baby, there are several dangerous stages that a woman should know about in order to understand and prevent trouble in a timely manner if necessary.
During pregnancy, the first dangerous period can develop in the second or third week. This is the time when a woman may not even suspect that she is pregnant. The fertilized egg, after entering the uterus, attaches to the mucous membrane. For a number of reasons, the process of attaching the fertilized egg to the uterus may be disrupted, then the pregnancy is interrupted and the woman begins an early miscarriage, which is quite difficult to diagnose (in some cases, menstruation can be very heavy). For normal attachment of the fertilized egg, the condition of the endometrium is extremely important. Various uterine anomalies, damage to the inner layer (endometrium) as a result of inflammation, multiple abortions can cause a disruption in attachment. Also, normal attachment of the egg can be prevented by contractions of the uterus after inflammation, curettage or any diseases (fibroids, endometriosis, etc.). In addition, chromosomal changes in the embryo can also lead to termination of pregnancy in the early stages, since the body itself gets rid of the "unhealthy" embryo.
The second dangerous period is the period of 8-12 weeks, when the placenta begins to form. During this period, one of the main reasons for termination of pregnancy is hormonal disorders, which can occur due to malfunctions of the ovaries, thyroid gland, as well as due to increased production of male sex hormones by the pregnant woman's body. In this case, the doctor must select the correct treatment, and it is important to promptly identify and prevent pathology.
During this period, environmental factors have a huge impact on the further development of the embryo: radiation (including industrial vibrations or sports), chemicals (smoking, pesticides, phenols, drugs, alcohol, etc.), viruses and infections.
During the first trimester of pregnancy, the woman's body adapts to a new condition, the woman experiences enormous mental and physical stress, so in the first months of pregnancy it is necessary to be extremely careful about your health.
The third dangerous period of pregnancy occurs at 18-22 weeks. During this period, the risk of developing placental pathology increases (placenta previa, malposition, detachment, etc.).
In addition, the most common cause of miscarriage during this period is isthmic-cervical insufficiency, i.e. a condition in which the cervix does not cope with its main function - holding the fetus in the uterus. High levels of male sex hormones, injuries, congenital anomalies, deformations after previous births - all this can cause softening and opening of the cervix. To prevent miscarriage, the doctor may apply stitches.
Also during this period, the likelihood of pathological conditions of the placenta, fetal membranes, and premature rupture of amniotic fluid as a result of untreated infectious diseases (chlamydia, ureaplasma, etc.) increases.
The fourth dangerous period may be at 28-32 weeks. At this time, the risk of developing gestosis, placental abruption, placental insufficiency increases, which may cause premature birth.
A woman, when approaching a dangerous period of pregnancy, should exclude heavy physical exertion, nervous shocks, sex. If the probability of termination of pregnancy is high enough, it is best to go to the hospital under the supervision of specialists so that timely assistance can be provided if necessary.
Dangerous days during pregnancy
During pregnancy, various pathological processes can develop that threaten further bearing of the child. The entire first trimester is considered to be the most vulnerable period, since any medications, nervous shocks, diseases, etc., are exactly what is dangerous during pregnancy. However, there are also other days that can threaten normal bearing.
But in each case, pregnancy proceeds individually, and the above-mentioned critical periods do not necessarily develop on certain days of pregnancy. The danger of miscarriage may occur in each woman individually. For example, if a woman's previous pregnancy ended in miscarriage, then the probability that the danger may recur at the same time is quite high, and both physiological and psychological characteristics of the female body play a large role. Of course, you need to take care of your health not only on certain days of pregnancy (on these days it is recommended to pay special attention, taking into account the individual characteristics of the body), which may threaten further gestation, but also throughout the entire period of pregnancy.
Dangerous weeks during pregnancy
During pregnancy, the expectant mother is prone to various worries about the health of the future baby, the upcoming birth, etc. Quite often, such worries are in vain, but at different stages, dangerous periods may arise that can complicate further pregnancy. Among doctors, such periods are usually called dangerous or critical weeks.
In the first weeks of pregnancy, when a woman usually does not yet know about her condition, any external factor can disrupt the process of embryo attachment. With various diseases of the inner layer of the uterus (postoperative injuries, inflammation, myoma), the attachment of the fertilized egg is complicated, the likelihood of miscarriage increases. Miscarriage also occurs with various chromosomal pathologies, when the body rejects an obviously non-viable embryo.
At 8-12 weeks, due to hormonal disruptions in the woman’s body, there may be a disruption in the development of the placenta, which is dangerous during pregnancy and can cause the death of the embryo.
In the second trimester, when the uterus begins to actively grow (18-22 weeks), the risk of premature termination of pregnancy also increases. Infections, a weakened cervix, and an incorrect location of the placenta can seriously complicate the course of pregnancy. During this period, the woman is prescribed a second planned ultrasound examination in order to examine pathologies as early as possible and take measures.
In the third trimester (28-32 weeks), placental abruption is possible. During an ultrasound, the condition and integrity of the placenta is carefully examined by a specialist. This complication can cause gestosis (late toxicosis), death of the child in the womb, premature birth. Children born during this period can survive, but they require special care.
Is orgasm dangerous during pregnancy?
From the first days of pregnancy, the female body begins to undergo enormous hormonal changes. Some women experience stronger sexual desire, feelings during sex become more intense and intensified. During pregnancy, the uterus grows, blood circulation in the pelvis increases, which causes increased desire and the appearance of more vivid sensations. Some women experience changes in sexual preferences, they want more affectionate, tender relationships.
An orgasm experienced by a future mother brings pleasant sensations not only to the woman, but also to the child in her womb. During an orgasm, increased blood circulation promotes better supply of nutrients and oxygen to the fetus. During contractions of the uterus during an orgasm, some training of labor occurs. The hormones of happiness released during an orgasm have a positive effect on both the woman and the child.
Sometimes a pregnant woman's orgasm is very necessary. When the due date has already come, but the baby is in no hurry to come into the world, an orgasm can push the birth process.
However, in some conditions, orgasm is dangerous for the health of the woman and the child. Orgasm leads to strong contractions of the uterus, which is dangerous during pregnancy, when there is a risk of miscarriage (increased tone). Orgasm is also contraindicated for a woman in the last days of pregnancy, since in this case the likelihood of premature birth increases.
Dangerous infections during pregnancy
All dangerous infections that threaten a pregnant woman are conventionally divided into two types:
- dangerous before pregnancy;
- posing a danger during pregnancy.
Chickenpox or varicella is one of those diseases that is best suffered in childhood, since in a child the disease is practically harmless, while for an adult, especially for a pregnant woman, the infection is a serious danger. The greatest danger is infection before 20 weeks, before and after childbirth.
Rubella is also a childhood disease. In a child, the disease has less pronounced symptoms than in an adult. If a girl had rubella as a child, then as an adult she is protected by antibodies developed during the disease. If there is no immunity to the infection, then the pregnant woman must be extremely careful not to get infected. The disease is most dangerous in the early stages, since in this case there is a very high risk of damage or death of the fetus.
Toxoplasmosis is a rather dangerous infection, and doctors pay special attention to this disease. The infection is a serious danger to the child and can proceed in the body without any symptoms.
Experts recommend taking all necessary tests before pregnancy to exclude the possibility of developing latent infections. If the test results show antibodies in the woman's body, it means that she has already had toxoplasmosis. In the absence of antibodies, one should be extremely careful to avoid contracting this infection during pregnancy. The carriers of the disease are mainly cats, so a pregnant woman who does not have antibodies to the infection should minimize contact with them. In addition, one should monitor the quality of food: meat should be well cooked, vegetables, fruits, greens, etc. should be thoroughly washed.
Cytomegalovirus is dangerous not only before pregnancy, but also directly during pregnancy. A woman may not even know about the infection, but the disease can pose a serious danger to the future child. It is generally accepted that primary infection poses a great danger to the fetus, while an exacerbation of the disease during pregnancy does not pose such a threat. Cytomegalovirus is transmitted through saliva, sperm, and blood. If the disease is detected before pregnancy, then it is important to pay attention to strengthening the immune system in order to prevent an exacerbation during pregnancy.
Genital herpes in early pregnancy leads to miscarriage or frozen pregnancy, in the second half of the term - to congenital anomalies in the child. The child can be infected during the passage through the birth canal or in the womb through the placenta. In some cases, a woman is recommended to have a cesarean section to prevent infection of the child.
Without exception, all specialists recommend that at the stage of pregnancy planning, you undergo a full examination, take all tests, and treat all existing diseases, including thrush, chlamydia, mycoplasmosis and other infections.
However, not all women undergo examination at the planning stage and almost all tests are taken at the beginning of pregnancy. If the tests reveal infections, which are dangerous during pregnancy and can have serious consequences, then you should follow all the doctor's recommendations and undergo a course of treatment to minimize the risk of possible complications.
Dangerous diseases during pregnancy
Almost any disease during pregnancy can cause negative consequences, including birth defects, miscarriages, etc.
Measles is the most contagious disease that is easily caught in childhood, the symptoms of the disease resemble acute respiratory infections, but on the third day a characteristic rash appears. For a pregnant woman who has not had measles, infection in the first three months can cause a miscarriage or developmental defects (mental retardation, damage to the central nervous system, etc.). In the early stages of pregnancy, possible fetal defects are extremely difficult to diagnose. Usually, a woman who has had measles in the first weeks of pregnancy is offered an abortion to completely eliminate the risk of giving birth to a sick child.
Epidemic parotitis or mumps is not as contagious as chickenpox or measles, but it is no less dangerous for a pregnant woman. Mumps is quite common among pregnant women, so you should avoid the disease, because it is the infection in the first trimester of pregnancy that is dangerous during pregnancy, when all the main organs and functions of the future child are developing. The mumps virus easily penetrates the fetus. It is believed that the virus affects the ovaries, which leads to a miscarriage (usually 10-14 days after infection). If the pregnancy continues to develop normally after the disease, then there is no reason to worry, since mumps does not lead to abnormal development of the fetus. Infection of the child can occur if the mother gets sick in the last weeks of pregnancy, but even in this case, everything passes with minimal consequences.
Influenza, especially in the first weeks of pregnancy, can lead to intrauterine death of the fetus; at later stages, the risk of premature birth increases, but the disease does not provoke fetal developmental abnormalities.
Chlamydia can cause miscarriage; often the child becomes infected during passage through the birth canal, which can subsequently cause conjunctivitis and pneumonia.
Jaundice does not pose a threat to the unborn child, but the risk of infection during childbirth is extremely high.
Lyme disease is transmitted mainly by ticks; the disease rarely affects the fetus, but there is a risk of neurological abnormalities and heart defects.
What is dangerous during pregnancy should be known by every woman who is preparing to become a mother. During this period, it is extremely important to take good care of your health, since the future health of the child largely depends on the health of the mother.