Urinary Tract Infection
Urinary tract infections (UTIs) are more common in pregnancy due to hormonal and anatomical changes. They require prompt treatment with antibiotics to prevent progression to kidney infection (pyelonephritis), which can trigger preterm labor.
Common Causes
- Progesterone relaxes the urinary tract walls, slowing urine flow and allowing bacteria to multiply
- Growing uterus compresses the bladder, causing incomplete emptying
- Glucose in the urine (more common in pregnancy) promotes bacterial growth
- The shorter female urethra makes ascending infection easier
- Asymptomatic bacteriuria (bacteria in urine without symptoms) affects 2–10% of pregnant women and must be treated
Remedies That May Help
Antibiotics (Prescribed)
UTIs in pregnancy always require antibiotic treatment — do not leave them untreated. Your provider will choose a pregnancy-safe antibiotic.
Increase Fluid Intake
Drinking more water dilutes urine and helps flush bacteria from the bladder.
Urinate Frequently
Don't hold urine for long periods. Urinate promptly when you feel the urge.
Wipe Front to Back
Proper hygiene after using the toilet prevents bacteria from the anal region from entering the urethra.
Urinate After Intercourse
Voiding after sex helps flush bacteria that may have entered the urethra.
When to Call Your Doctor
- Burning or stinging when urinating
- Frequent, urgent need to urinate with little output
- Cloudy, dark, or strong-smelling urine
- Blood in the urine (pink or red tinge)
- Fever, chills, or back/flank pain (possible kidney infection)
- Lower abdominal pain or pelvic pressure with urinary symptoms
Frequently Asked Questions
Are UTIs dangerous during pregnancy?
Untreated UTIs in pregnancy can progress to kidney infection (pyelonephritis), which is associated with preterm labor and sepsis. All UTIs in pregnancy must be treated promptly.
What antibiotics are safe for UTIs in pregnancy?
Nitrofurantoin, amoxicillin, cephalexin, and trimethoprim-sulfamethoxazole (with restrictions by trimester) are commonly used. Your provider will choose based on the bacteria found and trimester.
How is UTI diagnosed in pregnancy?
Urine culture (dipstick plus laboratory culture) is the standard test. Your provider will routinely screen for asymptomatic bacteriuria at your first prenatal visit.
What is asymptomatic bacteriuria?
Asymptomatic bacteriuria is bacteria detected in a urine culture without any symptoms. It is screened for at the first prenatal visit and treated in pregnancy because of the high risk of progression to kidney infection.
Can cranberry juice prevent UTIs in pregnancy?
Some evidence suggests cranberry products may reduce UTI recurrence. They are safe in pregnancy but are not a substitute for antibiotics when an infection is present.