Did you know that the balance of bacteria in your vagina can influence your overall health? Understanding the relationship between Group B Streptococcus (GBS) and Bacterial Vaginosis (BV) is crucial for maintaining intimate wellness.
Here's what you need to know:
Group B Streptococcus (GBS) and Bacterial Vaginosis (BV) are two common but often misunderstood players in vaginal health. While GBS is a type of bacteria that lives in the vagina and gut of many healthy women, it can become a problem in certain circumstances—especially during pregnancy or childbirth. BV, on the other hand, is a condition caused by an imbalance in the vagina’s natural bacteria.
Although they’re different issues, research suggests they may be linked—and understanding this connection can help you make better choices when it comes to your intimate care. In this blog, we’ll unpack what GBS and BV are, how they’re connected, and what you can do to prevent or manage both.
What Is Group B Streptococcus (GBS)?
Group B Streptococcus is a naturally occurring bacteria that’s found in the digestive, urinary, and reproductive tracts of around 20–30% of healthy women. Most of the time, it causes no symptoms and doesn’t need treatment. However, GBS can be dangerous if passed on during childbirth, as it may lead to severe infections in newborns.
If you’re pregnant, your doctor may test you for GBS in your third trimester to ensure appropriate treatment can be given during labour if needed.
What Is Bacterial Vaginosis (BV)?
Bacterial Vaginosis happens when there’s an imbalance in the natural bacteria found in the vagina. Normally, lactobacilli (good bacteria) dominate, keeping the vaginal environment acidic and healthy. But when other types of bacteria take over, BV can occur.
Symptoms of BV include:
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A fishy-smelling vaginal discharge (especially after sex)
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A thin, grey or white discharge
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Mild irritation or itching (sometimes)
It’s worth noting that BV isn’t an STI, but sexual activity—especially with new or multiple partners—can increase your risk.
The Overlap: Can BV and GBS Be Connected?
This is where it gets interesting. While GBS and BV are different, they share some common ground: both are influenced by the balance of vaginal bacteria. Some studies suggest that the bacterial imbalance seen in BV may create an environment that makes it easier for GBS to grow or thrive.
In other words, if your vaginal microbiome is disrupted, you may be more likely to carry GBS—even if you don’t show symptoms.
Myths and Misconceptions: What Doesn’t Help
There’s a lot of misinformation out there when it comes to vaginal health. Let’s clear up a few common myths:
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“I should douche regularly to stay clean.”
Nope! Douching can actually strip away good bacteria and make things worse. -
“If I use scented products, I’ll smell fresh and stay healthy.”
Again, not true. Perfumed soaps and wipes can mess with your pH and lead to infections. -
“BV is caused by poor hygiene.”
BV isn’t about hygiene at all—it’s about bacterial imbalance, not being “dirty.”
How GBS and BV Affect Confidence and Comfort
When your vaginal health isn’t quite right, it’s not just physical discomfort you’re dealing with—it’s emotional too. That feeling of not being “fresh,” worrying about odour, or second-guessing yourself in intimate moments can chip away at your confidence.
That’s why looking after your vaginal microbiome isn’t just about avoiding infections—it’s about helping you feel good in your own skin.
A Real-Life Example
Take Jane, for instance—a 30-year-old woman who kept getting BV flare-ups every few months. She tried natural remedies, pH-balanced washes, and even avoided sex for a while, but nothing worked long-term. Eventually, she spoke to her GP, who tested her for GBS. It turned out she was a carrier.
With antibiotics and ongoing support, she was able to treat both conditions and make some lifestyle changes that helped her vaginal health get back to balance. Now, Jane uses products like Après after sex to keep things fresh, clean, and comfortable—and she hasn’t had a recurrence since.
Your Top Questions Answered
Can Group B Strep cause BV?
Not directly, but a disrupted vaginal microbiome (as seen in BV) may allow GBS to grow more easily.
How do I know if I have GBS or BV?
BV usually comes with noticeable symptoms like discharge and odour. GBS often has no symptoms at all and is usually picked up during pregnancy screenings. If you’re unsure, talk to your GP.
Can I treat both at once?
Yes. Your doctor may prescribe antibiotics for either or both, depending on what’s going on. It’s also a good idea to support your vaginal microbiome with gentle hygiene practices and targeted products.
How can I prevent this from happening again?
Avoid douching or perfumed products, use condoms with new partners, wipe front to back, and consider using an after-sex care product like Après to gently support your body’s natural defences.
Key Takeaways
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GBS and BV are two different conditions, but they can co-exist or influence each other.
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Both are affected by changes in the vaginal microbiome.
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Disrupted flora (like in BV) may make you more likely to carry GBS.
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Symptoms of BV can impact your confidence and comfort—but you’re not alone.
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Support your vaginal health with gentle hygiene, regular checkups, and aftercare products like Après.
References and Citations
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Centers for Disease Control and Prevention. (2025). Group B Strep (GBS).
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Grand Rapids OB/GYN. (2023). Strep B in Vagina: Causes, Symptoms, and Treatment.
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Kumar, N. et al. (2017). Group B Streptococcus and the Vaginal Microbiota. Clinical Infectious Diseases.
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