During pregnancy, people may worry more about contracting infections and how they might affect the developing baby.
Vaginal infections, including yeast infections, are common during pregnancy and are usually not a cause for concern. Uterine infections may produce more complications, however.
This article looks at common infections during pregnancy, how they might affect the baby, and how to prevent them from developing.
Vaginal infections during pregnancy
Someone who is pregnant might be more vulnerable to certain infections and may develop more severe complications if the infections are left untreated. Anyone who has even a minor infection during pregnancy should talk to a doctor or midwife.
Typical vaginal infections during pregnancy include:
Vaginal yeast infections
Itchiness around the vagina is a common symptom of a vaginal yeast infection.
Vaginal yeast infections are caused by a fungus called Candida. These infections tend to occur during pregnancy because of changes in the immune system, increased production of glycogen, and higher estrogen levels.
According to a 2015 report, about 20 percent of all women have Candida, which rises to 30 percent during pregnancy. It appears to be more common during the second and third trimesters.
The most common symptoms of a vaginal yeast infection include:
- itchiness around the vagina or vulva
- a thick, white, cottage cheese-like vaginal discharge
- an odor of bread or beer coming from the vagina
- pain or burning in or around the vagina
- pain or burning during sexual intercourse
People can use prescription or over-the-counter medications to treat a vaginal yeast infection. However, anyone who is pregnant should not use these drugs without first talking to a doctor or midwife.
It is essential to get a diagnosis before beginning treatment as other infections, such as bacterial vaginosis and chlamydia, can be confused with yeast infections.
Bacterial vaginosis
Bacterial vaginosis (BV) is an easily treated bacterial infection in the vagina. Symptoms include:
- itching, burning, or pain in the vagina or vulva
- a fishy odor coming from the vagina
- a bad smell that gets worse after sexual intercourse
- a large amount of thin, grey colored discharge
If BV is left untreated during pregnancy, it might cause preterm labor, premature birth, and lower birth weight babies.
Group B Streptococcus (GBS)
Group B streptococcus (GBS) is a group of bacteria that come and go in the body but often frequent the vagina and rectum. They do not typically cause symptoms or even an infection. However, women who have GBS in their bodies when they give birth may pass it to their babies.
Mothers who have GBS will pass it on to their babies in 1 to 2 percent of cases. Although uncommon, GBS in a newborn can be fatal.
Testing late in pregnancy can detect GBS, and is a standard part of most prenatal care.
Treatment with antibiotics through a needle in a vein (IV antibiotics) can significantly reduce the risk of a GBS infection passing to the baby.





