Yeast infections are one of the most common complications during pregnancy, and the safest way to treat one is with an over-the-counter topical antifungal cream, ideally a seven-day formula. Oral antifungal pills, which are commonly used outside of pregnancy, carry risks to the developing baby and should be avoided. The good news is that a yeast infection won’t harm your baby, and effective treatment options are readily available without a prescription.
Why Yeast Infections Are So Common in Pregnancy
Rising estrogen levels during pregnancy change the chemistry of the vagina. Vaginal secretions contain more sugar, which feeds Candida, the fungus responsible for yeast infections. This creates an imbalance that allows yeast to overgrow faster than it normally would. The immune system also shifts during pregnancy to protect the developing baby, which can make it harder for your body to keep Candida in check on its own.
The second trimester is when yeast infections tend to peak, though they can happen at any point. Many women who rarely or never get yeast infections outside of pregnancy find themselves dealing with them for the first time.
Safe Treatment Options
Topical antifungal creams and suppositories are the first-line treatment for pregnant women. These are the same over-the-counter products available at any pharmacy, including clotrimazole and miconazole. The key difference during pregnancy is duration: for best results, choose a seven-day formula rather than a one-day or three-day option. The longer course works more reliably because the hormonal environment of pregnancy makes the infection harder to clear quickly.
You apply the cream or insert the suppository at bedtime, typically for seven consecutive nights. Many products come with an external cream as well, which can help relieve itching and irritation on the surrounding skin. When inserting a vaginal suppository, use your fingers rather than the plastic applicator that comes with some products, as the applicator can be uncomfortable and there’s a small theoretical risk of irritating the cervix.
Relief from itching and burning usually begins within the first two to three days, but it’s important to complete the full seven-day course even if symptoms improve. Stopping early increases the chance the infection will come back.
Why Oral Antifungals Are Not Recommended
Outside of pregnancy, many women treat yeast infections with a single oral antifungal pill. During pregnancy, this approach carries real risks. Research has found that taking oral fluconazole during early pregnancy may increase the risk of miscarriage. At doses higher than 150 mg during the first trimester, there is also an increased risk of heart defects in the baby, specifically problems with the walls that separate the heart’s chambers.
These risks apply to the oral pill form. Topical creams and suppositories deliver the medication locally and are not absorbed into the bloodstream in meaningful amounts, which is why they remain safe throughout all three trimesters.
Home Remedies to Avoid
Several popular home remedies for yeast infections are unsafe during pregnancy. Boric acid suppositories, sometimes recommended for stubborn or recurring yeast infections, should not be used. A review from Johns Hopkins found that safety data on boric acid during pregnancy are sparse, and current guidelines recommend avoiding it entirely. Boric acid is toxic if absorbed in significant amounts, and the lack of pregnancy-specific safety studies makes the risk not worth taking.
Tea tree oil suppositories, apple cider vinegar douches, and garlic inserts also lack safety evidence in pregnancy. Douching in general disrupts the vaginal microbiome and can push bacteria toward the cervix, increasing the risk of other infections.
Lifestyle Steps That Help
While topical antifungal treatment does the heavy lifting, a few everyday habits can support recovery and reduce your chances of getting another infection before delivery.
- Wear breathable underwear. Cotton underwear and loose-fitting clothing reduce moisture buildup, which Candida thrives on. Avoid sitting in damp workout clothes or swimsuits.
- Limit sugar intake. Vaginal secretions already contain more sugar during pregnancy, and a high-sugar diet can add to the problem. You don’t need to eliminate sugar entirely, but cutting back on sugary drinks and sweets may help.
- Skip scented products. Scented soaps, bubble baths, and feminine sprays can irritate vaginal tissue and make it easier for yeast to take hold. Wash the external area with warm water or a mild, unscented soap.
- Wipe front to back. This prevents introducing bacteria from the rectum into the vaginal area, which can worsen an existing infection or trigger a new one.
When the Infection Keeps Coming Back
Recurrent yeast infections, defined as four or more in a single year, are frustrating but not unusual during pregnancy. If you’ve completed a full seven-day treatment course and your symptoms return within a few weeks, your provider may want to confirm the diagnosis with a swab. What looks like a recurring yeast infection can sometimes be bacterial vaginosis or another type of vaginitis, which requires different treatment.
For confirmed recurrent infections, your provider may recommend a longer course of topical treatment or a different topical antifungal. The goal is always to use the safest effective option, and during pregnancy that means sticking with topical formulations rather than switching to oral medication.
Will a Yeast Infection Affect the Baby?
A vaginal yeast infection does not cross the placenta or reach the baby during pregnancy. The main concern is comfort for you. If an active yeast infection is present at the time of a vaginal delivery, there is a small chance the baby could develop oral thrush (white patches in the mouth) after passing through the birth canal. Oral thrush in newborns is very common, easily treated, and not dangerous. Treating your infection before your due date eliminates even this minor risk.