Thrush During Pregnancy: Symptoms, Causes, Treatment and What Actually Works

Written by Greta, Naturopath, Greta Naturopathy | Reviewed June 2026Greta specialises in hormones, reproductive health and the vaginal microbiome. Visit gretanaturopathy.com or follow @greta.naturopathy.

Thrush during pregnancy (also called a yeast infection), is incredibly common, but that doesn't make it any less uncomfortable or confusing when it happens to you.

Itching, irritation or changes to your discharge are often linked to normal hormonal shifts that can affect the vaginal microbiome. The good news is that thrush is usually manageable with the right support.

This article was written in collaboration with naturopath Greta from gretanaturopathy.com (@greta.naturopathy), who specialises in hormones, reproductive health and the vaginal microbiome.

What is thrush (vaginal yeast infection)?

Thrush occurs when there is an overgrowth of a yeast called Candida (most commonly Candida albicans). This yeast naturally lives in the vagina alongside "good" bacteria like Lactobacillus. Under normal conditions, these microbes exist in balance. But when that balance is disrupted, Candida can overgrow and lead to symptoms like itching, redness, swelling, thick white discharge and general discomfort, especially during urination or sex.

Why do I keep getting thrush during pregnancy?

If you feel like this has suddenly appeared out of nowhere, know your body has its reasons. Pregnancy creates the perfect environment for thrush. Here's why:

Pregnancy hormonal changes

Rising oestrogen levels increase glycogen (a form of sugar) in vaginal tissue. This provides a food source for Candida and creates an ideal environment for overgrowth.

Pregnancy changes to the vaginal microbiome

The vaginal microbiome becomes more dynamic during pregnancy. Even small changes can make it harder for beneficial bacteria to keep yeast in check.

Immune system changes when pregnant

Pregnancy naturally alters your immune response to support your baby, which can make the body slightly less effective at controlling yeast overgrowth.

Increased vaginal discharge in pregnancy

Higher levels of discharge can create a warmer, more moist environment — conditions in which yeast thrives.

Is thrush normal during pregnancy?

Yes, thrush is a very common experience during pregnancy, with up to 40% of healthy pregnant women reporting symptoms. Even if you've never had thrush before, pregnancy can be the first time it shows up.

Is thrush harmful during pregnancy or dangerous for my baby?

Reassuringly, in the vast majority of cases, thrush is not harmful during pregnancy, nor does it typically impact pregnancy outcomes or your baby. In some cases, thrush can be passed to your baby during vaginal birth, which may result in oral or vaginal thrush or fungal skin rashes. Both are common and treatable.

How can I tell the difference between thrush and normal pregnancy discharge?

Pregnancy naturally increases vaginal discharge, which can make things confusing. Thrush-related discharge is typically thick, white and cottage cheese-like, and is usually accompanied by itching, irritation or redness. If you're unsure, it's always best to check with your healthcare provider for an accurate diagnosis.

How to support vaginal health during pregnancy

Support beneficial bacteria

Beneficial bacteria, particularly Lactobacillus species, play a key role in maintaining a healthy vaginal environment. Targeted probiotic support may help maintain this balance during pregnancy.

Be mindful of sugar intake

Yeast thrives on sugar. Keeping blood sugar levels stable with balanced meals may help reduce the likelihood of overgrowth. Supporting your overall nutrition during pregnancy can also make a difference.

Wear breathable fabrics

Where possible, opt for cotton or bamboo underwear and avoid tight or synthetic clothing. Less heat and moisture creates a less ideal environment for yeast.

Practice gentle hygiene

Avoid harsh soaps and douching, as these can disrupt the natural vaginal environment. If needed, choose gentle, pH-balanced products.

Support your gut

Your gut and vaginal microbiomes are closely connected. Looking after gut health can have a positive flow-on effect.

Safe thrush treatment in pregnancy

There are pregnancy-safe treatments for thrush, but it's important to speak with your healthcare provider before starting. Common approaches include topical antifungal creams or pessaries (after the first trimester), lactic acid pessaries to reduce pH-related flares, lifestyle and dietary support to reduce recurrence, and specific pre and probiotic support. There are also natural options, but working with a practitioner ensures treatments are pregnancy-safe and appropriate for you.

FAQs About Thrush During Pregnancy

Is it normal to get thrush while pregnant?

Yes. Hormonal, immune and microbiome changes make thrush more common during pregnancy.

Can thrush harm my baby during pregnancy?

In most cases, no. Thrush is not harmful during pregnancy, though it can sometimes be passed to your baby during birth. If this happens, it is treatable.

How do I treat thrush during pregnancy safely?

Always speak with your healthcare provider. Safe options include antifungal treatments, probiotics and lifestyle support.

Why do I keep getting thrush during pregnancy?

Recurring thrush can be linked to hormonal changes, microbiome shifts, immune changes and increased vaginal moisture.

Is this thrush, or normal pregnancy discharge?

Thrush discharge is usually thick, white and accompanied by itching or irritation. If unsure, seek medical advice.

Pregnancy comes with a lot of unexpected symptoms — unfortunately, thrush is one of them. The goal isn't to control everything perfectly. It's to understand what's happening, spot the patterns if thrush is recurrent for you, support your body where you can, and know when to ask for help. Because most of the time, some of our most uncomfortable pregnancy symptoms are widely experienced and manageable.