Can a UTI Cause Nausea? When It Signals a Kidney Infection

A UTI is supposed to be about burning and bathroom trips. So when your stomach turns too, it is natural to wonder whether the two are connected. They can be, and the reason matters because it changes how quickly you should get care. This guide explains what the official health sources say about UTIs and nausea, how to tell a bladder infection from a kidney infection, and when to stop waiting it out.

Can a UTI cause nausea?

A typical bladder infection (the most common kind of UTI) is described by the NIDDK with symptoms such as burning during urination, frequent or intense urges to urinate even when little urine comes out, pain or discomfort in the lower abdomen, and cloudy, bloody or strong-smelling urine. Nausea is not on that list.

Nausea and vomiting show up in the NIDDK’s list of kidney infection symptoms, alongside fever and chills and pain in the back, side or groin. The NIDDK also explains that if a bladder infection is not treated or does not go away, it can spread to one or both kidneys. So a UTI plus nausea is worth taking seriously, because it may mean the infection has traveled upward.

That said, nausea can have many other causes, including a stomach bug, medicines, pregnancy or stress. You cannot tell the cause from the nausea alone, which is why the other symptoms matter.

Bladder infection vs. kidney infection symptoms

The table below summarizes the symptoms named by the NIDDK, so you can see where nausea fits.

The U.S. Office on Women’s Health also notes that fever and pain in the back, where the kidneys are located, are signs of a kidney infection. Its UTI page lists other symptoms too, such as pressure in the lower abdomen and a bad smell or cloudy look to the urine, and adds that older women may feel tired, shaky, confused or weak instead of having classic bladder symptoms.

Why a UTI can reach the kidneys

According to the NIDDK, kidney infections often begin when bacteria from the bowel enter the urinary tract and an infection in the bladder is not treated or does not clear. Women are more prone to this starting point. The Office on Women’s Health says women get UTIs up to 30 times more often than men, partly because a woman’s urethra is shorter and its opening sits close to the vagina and anus, where germs such as E. coli live. Other listed risk factors include sexual activity, diaphragm or spermicide use, pregnancy, menopause, diabetes and kidney stones.

If you keep getting UTIs, our guide on why UTIs keep coming back for so many women covers the common patterns, and can stress cause a UTI looks at one often-asked trigger.

When to see a doctor

Get care promptly for any suspected UTI, since a provider needs to confirm it and decide on treatment. Go further and seek care right away if you have:

• nausea or vomiting along with urinary symptoms
• fever or chills
• pain in your back, side or groin
• blood in your urine (the Office on Women’s Health says to contact a provider right away)
• UTI symptoms while pregnant (also a same-day contact, per the Office on Women’s Health)

The NIDDK adds that a kidney infection can rarely lead to sepsis, a life-threatening condition. Seek urgent care if you notice confusion, rapid breathing or heart rate, severe pain or discomfort, or shortness of breath along with fever or chills. For a medical emergency, call 911 or go to the nearest emergency room.

Everyday habits that support urinary health

The Office on Women’s Health lists several habits that are practical to build into your routine:

• Urinate when you need to, and avoid waiting more than three or four hours.
• Urinate before and after sex.
• Wipe from front to back.
• Drink plenty of fluids.
• Clean the anus and outer genital lips daily, and skip douching and feminine hygiene sprays.
• Wear underwear with a cotton crotch, avoid tight pants, and change out of wet swimwear or workout clothes promptly.

Antibiotics are a common part of UTI care, and they can affect the friendly bacteria that keep the vaginal environment balanced. That overlap is why many women also read about how yeast infections and UTIs relate. For a closer look at one supplement angle, see our review of what the research shows on probiotics for UTIs, and browse our hormones and menopause hub if midlife changes are part of your story.

Where Quixao fits

A probiotic is not a treatment for a UTI and cannot replace medical care. Some women add one to a daily routine to support their vaginal flora, especially around antibiotic use. The Quixao Vaginal Probiotic provides 60 billion CFU from four Lactobacillus strains (L. acidophilus, L. rhamnosus, L. reuteri and L. fermentum), paired with XOS and inulin prebiotic fiber, taken as 2 capsules daily with water, preferably after a meal. It is designed to support vaginal health and balanced pH. If you are pregnant, nursing or under medical supervision, consult a healthcare professional before starting any supplement.

The bottom line

Nausea is not a typical sign of a simple bladder infection, but it is a recognized sign of a kidney infection. If you have urinary symptoms and feel sick to your stomach, especially with fever, chills or back or side pain, do not wait. Contact a healthcare provider the same day, and use everyday habits to support your urinary health in between.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for general education and is not a substitute for advice from your healthcare provider.