Fever and Chills During Pregnancy

Learn why you may be experiencing these symptoms and what you can do about them.
Pregnant woman with hand on head

It's never normal to run a fever or experience chills when you're pregnant. If you do experience these symptoms, you may have an illness that's completely unrelated to your pregnancy, says Alyssa Dweck, M.D., an ob-gyn in Mount Kisco, NY, and co-author of the forthcoming book V is for Vagina. "It's easier to become sick when you're pregnant because your immune system is naturally suppressed," Dr. Dweck says. But there are some more serious conditions directly related to pregnancy that can cause these symptoms, too. Consult our guide to learn about the illnesses and conditions that may be to blame, as well as when to call your doctor.

Common Culprits of Fever and/or Chills
If you're feeling feverish or you have a case of the chills, you may be suffering from one of these common bugs. Rest assured -- they're all temporary and treatable!

Urinary Tract Infection (UTI)
Up to 10 percent of expectant moms will get a urinary tract infection (UTI) at some point during their pregnancies, according to the March of Dimes. Your urinary tract system encompasses your urethra, bladder, ureters, and kidneys. An infection occurs when bacteria gets into this system and multiplies. Most UTIs are bladder infections and aren't serious if they're treated right away with antibiotics and lots of liquids. If left untreated, a bladder infection may travel to the kidneys and cause a variety of complications, including preterm labor, a low birthweight baby, and sepsis. Some UTIs are asymptomatic, but others come with symptoms such as a strong urge to urinate, a burning sensation with urination, cloudy urine, and/or blood in the urine, along with fever, chills, and pelvic pain.

Influenza
You've probably experienced the fever, chills, achiness, coughing, nausea, and vomiting that signals influenza (or the flu) at some point in your life, so you know it's no fun. Pregnant women have a higher risk of getting the flu and becoming severely ill from it, as their immune systems are suppressed. How to tell if it's the flu or just a cold? The flu comes on quickly and your symptoms are more severe then with a cold, according to National Institutes of Health (NIH). If you suspect that you may have the flu, see your doctor right away. She'll recommend rest and plenty of fluids, along with an antiviral medication to shorten the span of your symptoms and prevent serious complications. Centers for Disease Control (CDC) recommends that all pregnant women get the flu shot.

Upper Respiratory Infection (aka the Common Cold)
We've all suffered from this viral infection of the upper respiratory tract, which includes the sinuses, nasal passages, pharynx, and larynx. You may have symptoms that mirror the flu, as well as a runny nose, sore throat, cough, and breathing difficulty. Dr. Dweck notes that an upper respiratory infection is not as serious as the flu and usually resolves spontaneously. The symptoms usually last from 3 to 14 days, and you can treat them at home. If you're still sick after several days, however, you may have a more serious infection (sinusitis, bronchitis, strep throat or pneumonia), so it's important to call your doctor.

Gastrointestinal Virus
The diarrhea and vomiting brought on by a GI bug can have serious consequences for pregnant women if left untreated, because dehydration can cause contractions and even preterm labor. Other potential side effects include hypotension, dizziness, weakness, fainting, and, in severe cases, electrolyte imbalance, Dr. Dweck says. Most cases of these viruses will resolve on their own, but fluids such as water and Gatorade, as well as the BRAT diet (bananas, rice, applesauce and toast) are helpful. The CDC advises that you call your doctor immediately if you've not been able to keep liquids down for 24 hours, you've been vomiting blood, you have signs of dehydration (little or no urine, dry mouth, excessive thirst, dizziness), you notice blood in your bowel movements, or you have a fever above 101?F.

Pregnancy: When to Worry: Fever

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