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Illnesses and their treatment in the first week of pregnancy
Last reviewed: 04.07.2025

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One of the most important periods of your life has come – you have found out that you are pregnant! Pregnancy lasts 9 months or 40 weeks. This time flies very quickly and sometimes you want to stop it to enjoy the moment. But sometimes, pregnancy cannot bring joy due to certain circumstances. In the first weeks of pregnancy, a woman may be bothered by various problems, for example: toxicosis, upset stomach, constipation, heartburn, dizziness, thrush and others. There are also a lot of questions about what to do if various diseases occur, which doctor to go to and when to register in general. In our article, we will consider in detail the frequently asked questions of women in the first weeks of pregnancy.
During the first weeks of pregnancy, all internal organs of the embryo are laid down and formed. That is why various diseases at this stage can be not only dangerous, but even fatal. But there are situations when illness cannot be avoided. What to do then? Now we will try to outline the algorithm of action for the most common diseases.
Thrush in the first weeks of pregnancy
Thrush is quite common among pregnant women. Moreover, it can be asymptomatic or cause severe discomfort. The causative agent of this disease is a fungus of the genus Candida. That is why thrush is called candidiasis. This disease causes severe itching, cheesy discharge and swelling of the mucous membranes of the genitals. It is believed that in pregnant women it occurs due to a decrease in immunity and hormonal changes in the body. Diagnosis of candidiasis in the first week of pregnancy is made using a visual gynecological examination and taking a smear for flora. To treat thrush in the first weeks of pregnancy, the drug Pimafucin is most often used (both in tablet form and in suppositories). Less often, suppositories for local use are prescribed with the presence of antifungal substances clotrimazole or miconazole. You can relieve itching with the help of baths with a warm solution of soda or a decoction of oak bark.
Cystitis in the first weeks of pregnancy
Cystitis (inflammation of the bladder) is also quite common in pregnant women. This disease causes cutting pain when urinating and a constant feeling of fullness in the bladder. Cystitis can be caused by an infection or an increased content of salts, which, passing through the ureters, mechanically scratch the walls. Diagnosis and differentiation of bladder inflammation is carried out using a general analysis and bacteriological examination of urine. In case of cystitis of infectious origin, antibiotics approved for use during pregnancy are prescribed, namely ampicillin, amoxicillin, fosfomycin and others. Antibiotics are prescribed strictly after evaluating the antibiogram in the bacteriological analysis of urine. In case of cystitis caused by an increased content of salts, diuretics (kanefron, urolesan) and a strict diet with the absence of salty and sour foods are prescribed. Symptoms can be temporarily relieved with warm baths with eucalyptus decoction.
Runny nose in the first weeks of pregnancy
There is such a diagnosis as "rhinitis of pregnancy". It manifests itself in narrowing of the nasal passages and increased mucus discharge in the nose. The cause of rhinitis of pregnancy is hormonal changes in the body. Usually it occurs in the first weeks of pregnancy and subsequently disappears without a trace. Specific treatment is not required. But it is necessary to remember that the use of vasoconstrictors, such as naphthyzinum, vibrocil is strictly not recommended. Firstly, they are addictive, secondly, they affect the vessels, increasing pressure and thereby disrupting placental blood flow, which is very dangerous in the first weeks of pregnancy. It is best to treat rhinitis of pregnancy with natural preparations based on essential oils of eucalyptus, mint and menthol. You can also use special solutions with sea salt. In case of prolonged runny nose in the first weeks of pregnancy, you should consult an ENT specialist to clarify the cause and prescribe adequate treatment.
Colds in the first weeks of pregnancy
If your pregnancy falls in the autumn or spring months, then during this period there is a high probability of "catching" a cold. A cold can be quite dangerous in the first weeks of pregnancy, so its prevention is very important. To avoid infection, doctors advise taking vitamins and using oxolinic ointment in crowded places. Do not disdain a gauze bandage. Your health and the health of your future baby are much more important than appearance. What should you do if you catch a cold? At a minimum, you need to call a doctor and take sick leave. If your body temperature rises, you can take paracetamol-containing drugs (look at the composition, caffeine is not desirable in the composition, as it increases blood pressure and pulse, which negatively affects placental blood flow). If you have a sore throat, it is good to gargle it with a solution of iodine and soda, if you have a runny nose, rinse your nose with a solution of regular or sea salt. It is very important at this time to drink a lot of warm drinks (you can drink raspberries, sea buckthorn, tea with honey and/or lemon, milk with honey).
Flu in the first weeks of pregnancy
Flu is very dangerous in the first weeks of pregnancy, since during this time all the organs and systems of the child are being laid. The symptoms of flu are familiar to many: body aches, headache, fever, sore throat, fatigue, drowsiness. How to treat flu during pregnancy? There is a saying: "Treat the flu, it will pass in 7 days, do not treat the flu, it will pass in a week." And this is true... Unfortunately, there are no drugs for the flu virus as such. There are drugs that relieve symptoms and help cope with the disease. How to alleviate and minimize the risk to the fetus during the flu? You need to adhere to strict bed rest, eat natural foods rich in vitamin C, take multivitamins, drink increased amounts of fluids, bring down the temperature with paracetamol-containing drugs and, of course, avoid complications of the flu. After the end of the illness, it is difficult to predict the effects of the disease on the development of the fetus. But often, in the first weeks of pregnancy, if the flu virus has caused irreversible consequences, a miscarriage occurs. If the pregnancy continues to proceed normally, the likelihood of negative changes is incredibly low.
Angina in the first weeks of pregnancy
Angina is quite dangerous in the first weeks of pregnancy. The causative agents of this disease are most often streptococci, less often staphylococci or pneumococci. Angina manifests itself as a severe sore throat and a sharp increase in body temperature. Angina can be of varying severity. Therefore, you should call a doctor to prescribe adequate treatment. In severe cases of the disease, antibiotics cannot be avoided. In this case, penicillin antibiotics are used (amoxicillin, amoxiclav, augmentin, flemoxin). In mild cases of angina, local therapy is used in the form of frequent gargling with a solution of iodine and soda, furacilin solution, propolis solution. To reduce high body temperature, drugs containing paracetamol are used. For symptomatic relief of sore throat, you can suck on mint candies, as well as drugs containing eucalyptus and menthol. To speed up the treatment, you should take vitamin C and multivitamins for pregnant women, and also adhere to strict bed rest.
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Herpes in the first week of pregnancy
There are two types of herpes, namely: common herpes (cold sores) and genital herpes. The first type is practically not dangerous in the first weeks of pregnancy. The second is a big threat. With primary infection with the herpes virus (cold sores) in the first weeks of pregnancy there is a small threat, but it is not as terrible as with genital herpes. 90% of the world's population are carriers of this virus. Most often, herpes "crawls out" when the immune system is weakened, which happens during pregnancy. In this case, Acyclovir and Zovirax are used locally. They are not absorbed into the blood and cannot harm the fetus. It has also been noted that herpes rashes do not occur when following a certain diet, namely eating a lot of vegetables, fruits and water. With genital herpes (especially with primary infection), we can even talk about terminating a pregnancy for medical reasons. At the first appointment with a gynecologist when registering, a test for antibodies to the herpes virus is mandatory. In any case, you must warn your gynecologist about this problem in order to prescribe adequate treatment.
Chickenpox in the first weeks of pregnancy
Chickenpox (or varicella) is very dangerous in the first weeks of pregnancy. It increases the likelihood of miscarriage and increases the chance of congenital abnormalities of the fetus. Also, the course of this disease during pregnancy can be accompanied by severe complications of the respiratory system, namely pneumonia, bronchitis, tracheitis, and so on. Unfortunately, in the first weeks of pregnancy there is no adequate treatment for chickenpox. If you are afraid of contracting chickenpox during pregnancy, then before planning, you can take a test for the presence of antibodies to this disease. If the test does not detect antibodies, then you can get vaccinated against chickenpox.