Pregnancy is a time of great excitement and change, both physically and emotionally. Alongside the more familiar symptoms — such as morning sickness, fatigue, and a growing bump — you may also notice changes in your vaginal discharge. While some changes are completely normal during pregnancy, a noticeable and unpleasant odor can cause concern.
In most cases, discharge is your body’s way of protecting the vagina from infection and maintaining a healthy balance. However, if you notice a strong or unusual smell, it could be a sign that something needs attention. Understanding what’s normal and what isn’t can help you decide whether you need to speak to your healthcare provider.
What is Normal Discharge in Pregnancy?’
Vaginal discharge, also known as leucorrhoea, often increases during pregnancy due to hormonal changes and increased blood flow to the vaginal area. Normal discharge is usually:
- Thin or milky white
- Mild-smelling or odourless
- Consistent in texture (not lumpy or grainy)
This type of discharge helps prevent infections by keeping the vagina clean and balanced.
When does Discharge Have a Smell?
While some variation in scent is normal, particularly during pregnancy, a strong or unpleasant smell could indicate an infection or imbalance. Some possible causes include:
1. Bacterial Vaginosis (BV)
BV is a common vaginal infection caused by an overgrowth of bacteria naturally found in the vagina. It often produces a fishy smell and may be accompanied by thin, greyish discharge.
2. Yeast Infection (Thrush)
An overgrowth of Candida yeast causes thrush. It can result in a thick, white, cottage-cheese-like discharge and a yeasty or bread-like odor, along with itching and irritation.
3. Sexually Transmitted Infections (STIs)
Some STIs, such as trichomoniasis, can cause smelly discharge, often accompanied by itching, burning, or discomfort.
4. Poor Vaginal pH Balance
Hormonal changes in pregnancy can alter your vaginal pH, sometimes leading to an overgrowth of certain bacteria or yeast.
When to See Your Midwife or GP?
It’s always best to get checked if you notice:
- A sudden change in smell or colour
- Green, yellow, or grey discharge
- Accompanied by itching, burning, or soreness
- Blood-streaked discharge (outside of spotting after sex or a cervical exam)
Prompt diagnosis and treatment can help prevent complications for both you and your baby.
Is Smelly Discharge Harmful to the Baby?
In most cases, smelly discharge itself is not harmful — it’s the underlying cause that could be an issue. Untreated infections such as BV or certain STIs may increase the risk of complications, including premature labour or low birth weight. That’s why it’s essential to get medical advice rather than ignore symptoms.
Self-Care and Prevention Tips
While you can’t always prevent infections, you can reduce your risk by keeping the vaginal area healthy:
- Wear breathable cotton underwear to allow airflow.
- Avoid scented soaps and vaginal douches, which can upset your natural pH balance.
- Wipe from front to back after using the toilet to prevent bacteria transfer.
- Change out of wet clothing quickly after swimming or exercise.
Smelly Discharge vs. Normal Pregnancy Changes
It’s important to remember that pregnancy brings many changes to your body. Hormonal fluctuations can sometimes cause a mild change in odour without indicating infection. However, if the smell is strong, fishy, or unpleasant, it’s safer to get it checked rather than assume it’s normal.
Other Pregnancy Concerns Alongside Discharge
Sometimes, women notice smelly discharge alongside other pregnancy milestones. For example, while you might be thinking about your upcoming gender scans from 14 weeks, you might also be noticing new or unfamiliar bodily changes. It’s completely natural to be focused on your baby’s development, but your health is just as important. Addressing concerns early ensures both you and your baby remain healthy throughout pregnancy.
How Diagnosis and Treatment Work?
If you visit your midwife or GP with concerns about discharge, they may take a swab sample from your vagina to identify the cause. Treatment will depend on the diagnosis:
- BV – Usually treated with antibiotics that are safe in pregnancy.
- Thrush – Treated with antifungal creams or pessaries (tablets inserted into the vagina).
- STIs – Treated with pregnancy-safe antibiotics or other prescribed medication.
Always follow medical advice carefully, and never self-medicate without speaking to a healthcare professional, as some over-the-counter treatments may not be safe during pregnancy.
Why Your Health Matters for Your Baby?
Your well-being directly impacts your baby’s development. By seeking prompt treatment for unusual symptoms, you help ensure a safe and healthy pregnancy. Clinics like Bump 2 Baby Scans often see expectant mothers who are proactive about their health, understanding that looking after themselves is the first step in looking after their baby.
Final Thoughts
Smelly discharge during pregnancy isn’t always a reason to panic, but it is a sign that you should pay attention to your body. In many cases, it’s caused by an infection that can be easily treated once diagnosed. The key is to act quickly, get checked by your healthcare provider, and follow their advice.
Pregnancy is a time to celebrate and prepare for your baby’s arrival, but it’s also a time to be extra attentive to your health. If something doesn’t feel right, trust your instincts — it’s always better to be safe and reassured than to worry in silence.
