What is Bacterial Vaginosis?

by Kate Miller on Aug 10 2026

Bacterial Vaginosis: Bacterial vaginosis, often shortened to BV, is a common vaginal condition caused by an imbalance in the natural bacteria that live in the vagina, not an infection you catch the way you catch an STI.

Also known as: BV, vaginal bacterial imbalance, vaginal dysbiosis.

Bacterial vaginosis is one of the most common vaginal conditions out there, and it has nothing to do with being unclean or careless. Your vagina normally hosts a community of bacteria, mostly a helpful type called lactobacilli, that keep things balanced and slightly acidic. When that balance tips and other types of bacteria grow in larger numbers than usual, you end up with BV.

We are covering this here because vaginal health and sexual health are tangled together. Sex, lube choices, toy hygiene, and even how you clean up after play can all nudge that bacterial balance one way or another. Knowing what BV actually is, what raises your risk, and when to see a doctor takes a lot of the worry out of it.

What Is Bacterial Vaginosis

Bacterial vaginosis happens when the mix of bacteria naturally living in the vagina shifts out of balance. Lactobacilli usually dominate and keep the environment acidic, which helps keep other bacteria in check. With BV, bacteria like Gardnerella and a few others multiply and take up more space than they should, and the vaginal pH rises.

It is extremely common. Many people with vaginas will experience it at least once, and some deal with it repeatedly. It is not considered a sexually transmitted infection, though sexual activity can influence your risk. You cannot get BV from a toilet seat or from casual contact, and having it does not mean anyone did anything wrong.

What Causes Bacterial Vaginosis and What Are the Symptoms

Doctors do not fully understand every cause, but several things are linked to a higher chance of developing BV. Douching is one of the biggest, since it washes away the helpful lactobacilli along with everything else. Having a new sex partner or multiple partners, not using condoms, and smoking are also associated with higher risk. Some people get BV with no clear trigger at all, which can feel frustrating but is not unusual.

Symptoms, when they show up, often include a thin grayish white discharge and a strong fishy odor that can be more noticeable after sex. Some people also notice mild itching or irritation, though many with BV have no symptoms at all. Because these signs overlap with other conditions, symptoms alone are not enough to confirm what is going on.

If you notice a change in discharge, smell, or comfort that is new for you, that is worth paying attention to. It does not automatically mean BV, but it is your body telling you something has shifted.

How Is Bacterial Vaginosis Treated

BV is typically treated with prescription antibiotics, either as pills or a topical gel or cream, prescribed by a doctor after they confirm what is actually going on. It is not something to self diagnose or treat with over the counter products marketed for general freshness, and it is not something HotCherry or any retailer can advise you on beyond pointing you toward a medical professional. Some cases clear up on their own, but recurrence is common enough that a lot of people deal with it more than once.

If you are pregnant or have any other health concerns, treatment decisions should go through your doctor, since they will factor those details in. Leaving BV untreated does not usually cause serious harm for everyone, but it can occasionally be linked to other complications, so getting it checked rather than guessing is the safer route.

Can Sex Toys and Lube Affect Your Risk of Bacterial Vaginosis

Anything that disrupts the natural bacterial balance in the vagina can play a role in BV, and that includes some of your sex gear choices. Sharing toys between partners without washing them or without a fresh condom on the toy can introduce new bacteria. Cleaning toys properly between uses, and between partners, matters here.

Lube ingredients matter too. Water based lube is the safest default for most bodies and is compatible with every toy material, including silicone. Some people find that certain lubes, spermicides, or scented products irritate their natural balance, though this varies a lot person to person and is not fully predictable. If you notice a pattern where certain products seem to trigger symptoms, it is worth mentioning to your doctor and trying a simple, unscented, water based option instead.

Non porous toy materials like body safe silicone, glass, and stainless steel are easier to clean thoroughly than porous materials, which can trap bacteria in tiny surface cracks over time. Washing toys with warm water and a gentle, toy appropriate cleanser after every use, and letting them dry fully before storing, is a simple habit that supports your overall vaginal health.

How to Reduce Your Risk of Bacterial Vaginosis

Skipping douching is one of the simplest changes you can make, since the vagina cleans itself and douching strips away the protective bacteria you actually want. Choosing water based lube, using condoms consistently if that fits your situation, and washing toys before and after use all support a stable bacterial environment. Cotton underwear and avoiding staying in wet swimwear or sweaty clothes for long stretches can also help, since a warm damp environment encourages bacterial overgrowth.

None of these habits guarantee you will never get BV, since some of it comes down to individual body chemistry that is not fully understood yet. But they do meaningfully lower the odds and are worth building into your routine either way, since they support general comfort and hygiene too.

When to See a Doctor About Bacterial Vaginosis

See a doctor or another qualified healthcare provider if you notice new discharge, an unusual odor, itching, or discomfort, especially if it is a change from what is normal for you. This matters because BV symptoms overlap with yeast infections, trichomoniasis, and some sexually transmitted infections, and treating the wrong thing does not fix the actual problem. A simple exam and test can tell them exactly what is going on so you get the right treatment instead of guessing.

If BV keeps coming back, that is also worth raising with your doctor, since recurring cases sometimes need a different treatment approach or a longer conversation about what might be contributing to it in your specific case.

Bacterial Vaginosis vs Yeast Infection: Quick Comparison

Bacterial VaginosisYeast Infection
CauseOvergrowth of certain bacteria, imbalance of natural vaginal floraOvergrowth of Candida fungus
Typical dischargeThin, grayish white, wateryThick, white, often described as cottage cheese like
OdorStrong fishy smell, often more noticeable after sexUsually mild or yeasty, not fishy
ItchingSometimes mild, often minimalOften significant itching and irritation
Linked to sexual activityAssociated risk factor, not classified as an STINot typically linked to sexual activity, though sex can contribute
TreatmentPrescription antibiotics from a doctorAntifungal medication, sometimes over the counter

Key Things to Know

  • BV comes from a bacterial imbalance, not poor hygiene, so there is no reason to feel embarrassed if you get it.
  • Douching raises your risk because it strips away helpful bacteria, so skipping it supports a healthier balance.
  • BV and yeast infections have different causes and different discharge patterns, so getting a proper diagnosis matters before treating anything.
  • Water based lube and clean, non porous toys support a stable vaginal environment, which is useful info for anyone who uses toys regularly.
  • BV needs prescription treatment from a doctor, so home remedies and general feminine hygiene products are not a substitute for a proper diagnosis.

FAQ

Is bacterial vaginosis an STI?

No, bacterial vaginosis is not classified as a sexually transmitted infection. It is caused by an imbalance in the bacteria that already live in the vagina rather than by a new organism passed between partners. That said, sexual activity, new partners, and not using condoms are linked to a higher risk of developing it, so the two topics are related even though BV itself is not an STI.

Can bacterial vaginosis go away on its own?

Sometimes mild cases clear up without treatment, but BV is unpredictable and can also persist or come back. Because the symptoms overlap with other conditions like yeast infections and some STIs, it is safer to get checked by a doctor rather than wait and hope it resolves. If it is left untreated in some cases, there can be complications, so a proper diagnosis is worth the appointment.

Can sex toys cause bacterial vaginosis?

Sex toys themselves do not cause BV, but poor hygiene around toys, like not washing them between uses or between partners, can introduce bacteria that disrupt your natural balance. Using water based lube, cleaning toys with a gentle cleanser after every session, and choosing non porous materials like silicone or glass can lower that risk. This is more about hygiene habits than the toys being inherently risky.

What is the difference between BV and a yeast infection?

Bacterial vaginosis involves an overgrowth of certain bacteria and usually causes a thin grayish discharge with a fishy odor. A yeast infection is caused by an overgrowth of Candida fungus and typically causes thick white discharge with noticeable itching but little to no odor. Since they need different treatments, a doctor's exam is the reliable way to tell them apart.

Does BV mean I did something wrong?

Not at all. Bacterial vaginosis is extremely common and can happen even with excellent hygiene habits, since it comes down to natural shifts in vaginal bacteria that are not always predictable. Certain habits like douching or new sexual partners raise the odds, but plenty of people get BV without any clear trigger. It is a common health condition, not a reflection of cleanliness or behavior.

Can I use lube if I have bacterial vaginosis?

Once you are being treated, plain water based lube is generally the gentlest option since it will not add extra ingredients that could irritate healing tissue. It is worth asking your doctor if they have specific advice for your situation, especially around timing of sexual activity during treatment. Avoiding scented or heavily flavored lubes while your body is recovering is a reasonable precaution.

Related Terms

Sources

  • CDC: “Douching, not using condoms, and having new or multiple sex partners can upset the normal balance of vaginal bacteria, increasing your risk for getting BV.”
  • Cleveland Clinic: “Up to 80% of people get bacterial vaginosis again in their lifetime.”
  • Planned Parenthood: “Water-based lube is a safe bet to use with any sex toy (and any condom).”