UTI During Pregnancy
Medically reviewed by Dr. Lisa Okafor, MD, FACOG · Board-Certified OB-GYN
Content reviewed against published ACOG, NIH, CDC guidelines
Last reviewed:
Your health matters just as much as your baby's. If you are dealing with uti during pregnancy, here is what you need to know.
The short answer
Urinary tract infections (UTIs) are common during pregnancy, affecting 2-10% of pregnant people. Pregnancy increases UTI risk due to hormonal changes that relax the urinary tract and the growing uterus compressing the ureters. Untreated UTIs during pregnancy can lead to kidney infections and pregnancy complications, so prompt treatment with pregnancy-safe antibiotics is important.
Key takeaways
- Urinary tract infections (UTIs) are common during pregnancy, affecting 2-10% of pregnant people. Pregnancy increases UTI risk due to hormonal changes that relax the urinary tract and the growing uterus compressing the ureters. Untreated UTIs during pregnancy can lead to kidney infections and pregnancy complications, so prompt treatment with pregnancy-safe antibiotics is important.
- Usually normal when: Frequent urination without pain or burning is normal in pregnancy and not a UTI
- Call your doctor if: Fever, chills, back pain (especially on one side), nausea, or vomiting with urinary symptoms - suggesting kidney infection (pyelonephritis)
- Varies by age — see the age-by-age breakdown below
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What Parents Should Know
According to ACOG, NIH, CDC guidelines, urinary tract infections (UTIs) are common during pregnancy, affecting 2-10% of pregnant people. Pregnancy increases UTI risk due to hormonal changes that relax the urinary tract and the growing uterus compressing the ureters. Untreated UTIs during pregnancy can lead to kidney infections and pregnancy complications, so prompt treatment with pregnancy-safe antibiotics is important. At First trimester, your provider will screen for bacteria in your urine at your first prenatal visit, even if you have no symptoms, because asymptomatic bacteriuria (bacteria without symptoms) is common and should be treated during pregnancy to prevent kidney infections. Drink plenty of water and urinate frequently. It is generally considered normal when frequent urination without pain or burning is normal in pregnancy and not a UTI. However, you should contact your pediatrician promptly if fever, chills, back pain (especially on one side), nausea, or vomiting with urinary symptoms - suggesting kidney infection (pyelonephritis).
Normal vs. Concerning
By Age
What to expect by age
First trimester
Your provider will screen for bacteria in your urine at your first prenatal visit, even if you have no symptoms, because asymptomatic bacteriuria (bacteria without symptoms) is common and should be treated during pregnancy to prevent kidney infections. Drink plenty of water and urinate frequently.
Second trimester
UTI risk continues throughout pregnancy. Symptoms include burning with urination, frequent urgent need to urinate, cloudy or strong-smelling urine, and pelvic discomfort. Wiping front to back, staying hydrated, emptying your bladder completely, and urinating after intercourse can help prevent UTIs.
Third trimester
UTIs in the third trimester need prompt treatment as they can increase the risk of preterm labor. If you develop symptoms of a kidney infection - high fever, back pain, nausea, or vomiting - seek immediate medical care. Several antibiotics are safe and effective during pregnancy.
What to Tell Your Pediatrician
- Describe when you first noticed uti during pregnancy and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if burning or pain when urinating.
- Mention if urgent frequent need to urinate small amounts with discomfort.
- Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
- Bring a list of any questions or observations you want to discuss at the appointment.
What Should You Do?
When to take action
- Frequent urination without pain or burning is normal in pregnancy and not a UTI
- Clear, pale yellow urine without unusual odor
- Burning or pain when urinating
- Urgent frequent need to urinate small amounts with discomfort
- Cloudy, dark, bloody, or foul-smelling urine
- Mild lower abdominal or pelvic discomfort with urinary symptoms
- Fever, chills, back pain (especially on one side), nausea, or vomiting with urinary symptoms - suggesting kidney infection (pyelonephritis)
- Blood in urine with severe pain
- UTI symptoms accompanied by contractions or pelvic pressure before 37 weeks
What You Can Do at Home
- Keep track of when you notice uti during pregnancy — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that frequent urination without pain or burning is normal in pregnancy and not a UTI — this is generally within the range of normal.
- At First trimester, focus on observation rather than intervention unless your pediatrician advises otherwise.
- Prioritize your own rest and nutrition. Accept help when offered, and do not hesitate to reach out to your healthcare provider.
- While monitoring at home, seek immediate care if fever, chills, back pain (especially on one side), nausea, or vomiting with urinary symptoms - suggesting kidney infection (pyelonephritis).
Related Conditions
Frequent Urination in Pregnancy
Frequent urination is one of the most common symptoms of pregnancy, affecting nearly all pregnant people. It is caused by hormonal changes, increased blood flow to the kidneys, and the growing uterus pressing on the bladder. It is most noticeable in the first and third trimesters and is usually completely normal.
Yeast Infections During Pregnancy
Yeast infections are more common during pregnancy due to higher estrogen levels and changes in vaginal pH that promote Candida overgrowth. They affect about 1 in 4 pregnant people. While uncomfortable, yeast infections do not harm the baby during pregnancy. Topical antifungal treatments are safe and effective during pregnancy.
Related Resources
Postpartum Recovery Guide
Week-by-week postpartum recovery timeline and warning signs.
Month-by-Month Development
Detailed monthly development guides from birth through 24 months.
When to Call the Doctor
General guide on when to call the pediatrician, visit urgent care, or go to the ER.
Frequently asked questions
Is uti during pregnancy normal?
When should I call the doctor about uti during pregnancy?
When is uti during pregnancy normal?
What causes uti during pregnancy?
What should I mention to my pediatrician about uti during pregnancy?
Is uti during pregnancy normal at First trimester?
Is uti during pregnancy normal at Second trimester?
Should I go to the ER for uti during pregnancy?
Does uti during pregnancy go away on its own?
References
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss UTI During Pregnancy.
Things to mention
- Describe when you first noticed uti during pregnancy and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if burning or pain when urinating.
- Mention if urgent frequent need to urinate small amounts with discomfort.
- Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
- Bring a list of any questions or observations you want to discuss at the appointment.
Observations to share
- Burning or pain when urinating
- Urgent frequent need to urinate small amounts with discomfort
- Cloudy, dark, bloody, or foul-smelling urine
Urgent signs to report immediately
- Fever, chills, back pain (especially on one side), nausea, or vomiting with urinary symptoms - suggesting kidney infection (pyelonephritis)
- Blood in urine with severe pain
- UTI symptoms accompanied by contractions or pelvic pressure before 37 weeks
My notes
From ismybabyalright.com — free, evidence-based baby health guides
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members
Related Resources
Bottom line
Most cases of uti during pregnancy are normal. Talk to your pediatrician if fever, chills, back pain (especially on one side), nausea, or vomiting with urinary symptoms - suggesting kidney infection (pyelonephritis).
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
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Frequent Urination in Pregnancy
Frequent urination is one of the most common symptoms of pregnancy, affecting nearly all pregnant people. It is caused by hormonal changes, increased blood flow to the kidneys, and the growing uterus pressing on the bladder. It is most noticeable in the first and third trimesters and is usually completely normal.
Yeast Infections During Pregnancy
Yeast infections are more common during pregnancy due to higher estrogen levels and changes in vaginal pH that promote Candida overgrowth. They affect about 1 in 4 pregnant people. While uncomfortable, yeast infections do not harm the baby during pregnancy. Topical antifungal treatments are safe and effective during pregnancy.
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