Simple daily habits like wearing cotton underwear, changing out of damp clothes quickly, and avoiding scented products may help reduce your risk.
You probably expected some pregnancy symptoms—morning sickness, swollen feet, maybe heartburn. But the relentless itching and cottage-cheese discharge that comes with a vaginal yeast infection? That one often catches people off guard. Blame the hormonal shifts of pregnancy: rising estrogen and progesterone can throw off your vaginal pH, making yeast (Candida) more likely to overgrow.
The good news is that most yeast infections during pregnancy are avoidable with a few simple, consistent habits. The strategies below are based on recommendations from major medical institutions and are safe to use throughout your pregnancy. None involve medication—just small changes in your daily routine that can make a meaningful difference.
Why Yeast Infections Are More Common During Pregnancy
During pregnancy, your body produces more estrogen, which increases the amount of glycogen (a type of sugar) in vaginal secretions. Yeast feeds on that sugar, so it has more fuel to grow. At the same time, the vaginal environment becomes slightly less acidic, which normally keeps yeast in check.
Your immune system also shifts during pregnancy to protect the growing baby—this natural change can make it a bit harder for your body to fight off minor infections, including yeast. The combination of more food for yeast and a slightly more welcoming environment is why many women experience their first yeast infection during pregnancy.
Simple Daily Habits That Help Prevent Yeast Infections
You don’t need a complicated routine. Most prevention boils down to keeping the vaginal area cool, dry, and free from irritants. Here are the habits that experts consistently recommend:
- Wear cotton underwear every day: Cotton allows air to circulate, reducing moisture. Synthetic fabrics like nylon or polyester trap heat and sweat, creating an ideal environment for yeast growth.
- Change out of damp clothing fast: After swimming, exercise, or wearing a sweaty outfit, get into dry clothes within 30 minutes. Yeast thrives in warm, moist spots.
- Wipe from front to back after using the toilet: This simple direction helps keep bacteria from the anus from reaching the vagina, where it can upset the balance of good and bad organisms.
- Avoid scented feminine products: Scented tampons, pads, pantyliners, toilet paper, sprays, and bubble bath can irritate the delicate vaginal lining and disturb its natural pH.
- Change pads and pantyliners often: If you use them for spotting or discharge, swap them every few hours. A moist pad left in place too long becomes a breeding ground for yeast.
These habits are safe for any trimester and don’t require a prescription. Many women find that just switching to cotton underwear and being more mindful about moisture makes a noticeable difference in how often they experience symptoms.
What to Wear and What to Avoid
The type of clothing you choose matters more than you might think. Tight pants, synthetic leggings, and non-breathable underwear trap heat and moisture. A good rule of thumb: wear loose, natural-fiber bottoms whenever possible. The patient education guide from UAMS recommends cotton underwear and breathable clothing as a first-line prevention step—see the wear cotton underwear pregnancy section for the full list of tips.
| Fabric / Clothing | Risk Level | Why It Matters |
|---|---|---|
| Cotton underwear | Low | Breathable, absorbs moisture, allows air flow |
| Synthetic underwear (nylon, polyester) | Moderate | Traps heat and moisture against the skin |
| Lace or mesh underwear | Moderate | May have synthetic lining that reduces breathability |
| Tight jeans or leggings | Moderate | Restricts air circulation, increases sweat |
| Loose cotton or linen pants | Low | Allows airflow, reduces moisture buildup |
Avoid sitting in a wet swimsuit for long periods after swimming. If you need to be in a swimsuit for a while, bring a change of dry clothes and put them on as soon as you’re out of the water.
Other Factors That Can Increase Your Risk
Beyond clothing and hygiene, several other factors can tip the scales toward a yeast infection during pregnancy. Being aware of them can help you take extra precautions when needed.
- Antibiotic use: Antibiotics kill off the good bacteria (Lactobacillus) that normally keep yeast in check. If you need an antibiotic for a bacterial infection, expect that a yeast infection may follow and discuss prevention with your provider.
- High blood sugar or gestational diabetes: Yeast feeds on sugar. If your blood sugar runs high—whether from diabetes or pregnancy-related changes—your vaginal secretions may contain more glucose, feeding yeast growth. Good blood sugar control may help reduce infections.
- Weakened immune system: Conditions like HIV or medications such as corticosteroids can make it harder for your body to control yeast. If you have an immune-compromising condition, talk to your OB about yeast infection prevention.
- Probiotics (possible help): Some research suggests that eating yogurt containing live cultures may help prevent yeast infections, though the evidence is mixed. Eating a cup of plain, unsweetened yogurt daily is unlikely to cause harm and may offer mild benefit.
If you notice that yeast infections keep coming back despite good prevention habits, check with your obstetrician. They can rule out other causes like bacterial vaginosis or a sexually transmitted infection, which can mimic yeast symptoms.
What If You Still Get a Yeast Infection?
Even with the best prevention, yeast infections can happen during pregnancy. The hormonal changes are powerful, and not every infection is within your control. The good news: these infections do not harm the baby. However, if a yeast infection is still present during labor and delivery, the baby can develop thrush (a yeast infection in the mouth) or a rash in skin folds shortly after birth. That’s why treatment is recommended even for mild cases.
Topical antifungal creams and suppositories containing clotrimazole or miconazole are generally considered safe during pregnancy. The typical treatment course is 7 days—longer than the usual 3-day course—because longer treatment tends to be more effective in pregnancy. Per the Mayo Clinic’s yeast infections in pregnancy resource, you should always confirm the diagnosis with your provider before starting any treatment.
| When to Call Your Doctor | When It’s Likely a Yeast Infection |
|---|---|
| First-time symptoms during pregnancy | Vaginal itching, especially intense |
| You’ve used an OTC cream for 3–4 days and it’s not improving | White, thick discharge that looks like cottage cheese |
| You also have pain, fever, or unusual odor | Redness and swelling outside the vagina |
| You have multiple infections in a row | Burning sensation, especially when urinating |
Oral antifungal pills like fluconazole are generally avoided in the first trimester because of potential risks, but may be considered later in pregnancy if topical treatment fails. Always follow your provider’s guidance rather than self-treating.
The Bottom Line
Preventing yeast infections during pregnancy really comes down to keeping the vaginal area dry and free from irritants: wear cotton underwear, change out of damp clothes quickly, wipe front to back, and avoid scented products. These steps are safe, free, and backed by clinical experience. If you have diabetes or gestational diabetes, good blood sugar control may also help reduce your risk.
Your obstetrician or midwife can help you sort out whether your symptoms are truly yeast-related and recommend the safest treatment for your specific trimester—especially if you have recurrent infections or any medical condition that affects your immune system.
References & Sources
- Uams. “Yeast Infection During Pregnancy” Wear loose, cotton, breathable clothing and cotton underwear to help prevent yeast infections.
- Mayo Clinic. “Yeast Infection During Pregnancy” Yeast infections are common during pregnancy because hormone changes can upset the pH balance of the vagina.