Bacterial vaginosis during pregnancy

Normal vaginal discharge during pregnancy

If you’ve noticed more vaginal discharge since you became pregnant, you’re definitely not alone. In fact, normal vaginal discharge during pregnancy is one of the most common changes people notice in early pregnancy and beyond.

Hormones and increased blood flow to the vagina and cervix mean your body produces more fluid to help protect the womb from infection. This is usually a healthy sign that your body is adapting to pregnancy.

Health professionals sometimes call this physiological discharge or leukorrhoea. It’s usually:

If your discharge fits this description and you feel well in yourself, it’s usually considered a normal part of a healthy pregnancy.

Why discharge increases in pregnancy

Several things are going on at once:

  • Hormones (especially oestrogen) stimulate glands in your cervix and vagina, leading to more vaginal discharge.
  • Increased blood flow to the pelvic area means the tissues around your vagina and cervix are more active and produce more fluid.
  • The discharge helps flush away bacteria and reduce the risk of infection travelling up into the womb, which is particularly important when you’re pregnant.

So while it can feel a bit annoying (and may mean more pant-liner use than you’d like), pregnancy vaginal discharge is often a sign that your body is doing its protective job.

What normal pregnancy discharge looks and smells like

Normal vaginal discharge during pregnancy and when to get help

Everyone’s “normal” is slightly different, but in general:

  • Colour: clear, creamy, off-white or milky white
  • Texture: thin, slippery or slightly sticky; may dry as a faint white or yellowish stain in your underwear
  • Smell: mild, not fishy or foul
  • Sensation: no itching, burning or soreness

You might notice that discharge increases at different times, for example:

  • In early pregnancy, when hormones first rise
  • In the second trimester, when blood flow ramps up
  • Towards the end of pregnancy, when you can have more discharge and sometimes see a small amount of jelly-like mucus as your body prepares for birth

If that all sounds familiar and you feel well, it’s usually within the range of normal pregnancy vaginal discharge.

When pregnancy vaginal discharge might be a concern

Sometimes vaginal discharge can be a sign that something isn’t quite right, such as an infection or, more rarely, a complication. It’s important not to panic, as many causes are common and treatable, but changes should be checked.

Colour and texture changes to watch for

Contact your midwife, GP or local sexual health clinic if you notice any of the following:

  • Yellow, green or grey discharge
  • Thick, cottage-cheese-like discharge, especially with itching (can be a sign of thrush)
  • Thin, grey-white discharge with a strong fishy smell, which may be bacterial vaginosis (BV)
  • Brown or blood-streaked discharge outside of a light “show” near the end of pregnancy
  • Very watery discharge that soaks a pad or feels like you’re leaking fluid continuously (this may be amniotic fluid rather than normal discharge)

You should also seek advice if there’s a sudden change in the amount or smell of your usual discharge, especially if it’s unpleasant.

Other symptoms that need urgent care

Get urgent advice (from your maternity triage, NHS 111, urgent care, or A&E if needed) if discharge is accompanied by:

  • Heavy bleeding or passing clots
  • Severe pain in your tummy or pelvis
  • Fever, feeling very unwell or chills
  • Pain when you wee or when having sex
  • New, strong, unpleasant smell
  • Contractions or tightening that don’t settle

If in doubt, it is always safer to get checked. Health-care teams would much rather see you and reassure you than have you sitting at home worrying.

Possible causes of abnormal discharge (thrush, bacterial vaginosis and STIs)

Some common causes of abnormal vaginal discharge in pregnancy include:

  • Thrush (yeast infection): thick, white, lumpy discharge (like cottage cheese), intense itching, soreness around the vulva.
  • Bacterial vaginosis (BV): thin, grey-white discharge with a fishy smell that may be stronger after sex. BV in pregnancy has been linked in some studies with an increased risk of preterm birth or late miscarriage, so it’s important to get symptoms checked and treated.
  • Sexually transmitted infections (STIs): such as chlamydia, gonorrhoea or trichomoniasis can cause unusual discharge, sometimes with pain, bleeding after sex or discomfort when you wee.
  • Non-infective causes: such as irritation from perfumed products, washing inside the vagina (douching), or a forgotten tampon (very smelly discharge and needs urgent removal).

Only a health professional can tell you what’s going on for sure. That might mean an examination, a swab and sometimes checking your medical records for any previous infections or test results.

Pregnancy discharge, mucus plug and your waters – what’s the difference?

You’ll see terms like pregnancy discharge, mucus plug and waters breaking used a lot, especially when you’re googling symptoms at 3am. It can be confusing, so here’s a simple breakdown.

What is the mucus plug?

The mucus plug is a thick “blob” of mucus that sits in your cervix and helps seal the womb, protecting your baby from infection. As your body gets ready for birth, this plug can loosen and come away.

You might notice:

  • A thick, jelly-like discharge, sometimes in one go, sometimes in pieces
  • It may be clear, yellow, brown or blood-streaked – this is often called a “show”

A show can be a sign that labour is on its way soon, but it doesn’t guarantee that contractions will start immediately. Some people lose their mucus plug days before labour begins; for others, it happens much closer to birth.

Pregnancy discharge vs your waters breaking

It can be tricky to tell the difference between normal vaginal discharge and amniotic fluid (your waters). As a general guide:

Normal discharge:

  • Thicker and more slippery or sticky
  • Often leaves a creamy stain in your underwear
  • Comes and goes rather than continuous leaking

Waters breaking:

  • Clear or slightly straw-coloured fluid
  • May be a sudden gush or a constant trickle
  • Can be enough to soak through your underwear or a pad

If you think your waters might have broken, call your maternity unit straight away. Even if you’re not having contractions, they will usually want to assess you and your baby.

Looking after your vaginal health in pregnancy – everyday self-care tips

Good vaginal health is about comfort, preventing infection as far as possible, and knowing when to get help. Simple day-to-day choices can make a big difference.

Everyday self-care tips

Looking after your general health and mental health also helps – things like enough rest, eating well, moving your body as you’re able, and reaching out for support if pregnancy worries are getting on top of you.

Avoid douching to preserve natural vaginal flora and prevent irritation

The vagina cleans itself naturally and does not need internal cleansing products. Douching involves the use of water or cleaning solutions to rinse inside the vagina, which disrupts the natural balance of bacteria. This disruption can lead to infections and other health problems.

Healthy vaginal discharge changes throughout the menstrual cycle. For example, thick white discharge before period is normal and indicates the body works as it should. Douching can interfere with these natural processes and alter the vagina’s pH balance.

The vagina maintains an acidic environment with good bacteria that protect against harmful organisms. However, scented products and douches remove this protective layer. This removal increases the risk of bacterial vaginosis, yeast infections, and irritation.

Women should avoid all internal cleansing products, including feminine sprays and deodorants. The external vulvar area only needs gentle washing with warm water. This simple approach protects vaginal health better than any commercial product. Douching can upset the natural balance and is linked to bacterial vaginosis and possibly preterm birth.

Sex, hygiene and underwear choices

Many people with a normal vaginal discharge in pregnancy find sex comfortable and safe, but you may feel more sensitive or self-conscious. A few tips:

  • Use extra lubricant if needed – hormonal changes and increased blood flow can change how sex feels.
  • If sex causes bleeding, pain or a big change in discharge, contact your midwife or GP.
  • Avoid strongly perfumed bubble baths or intimate sprays – they can irritate and increase the risk of vaginal infection.

If you’re ever unsure whether something is safe in pregnancy, your GP, midwife or health visitor can offer primary care advice tailored to you.

Wear breathable cotton underwear to reduce moisture buildup and bacterial growth

    Cotton underwear helps keep the vaginal area healthy because it allows air to flow freely. This natural fabric pulls moisture away from the skin instead of trapping it against the body. The increased airflow prevents heat and dampness from building up in the genital area.

    Excess moisture creates an environment where yeast and bacteria can multiply quickly. Synthetic fabrics like nylon and polyester trap heat and wetness against the skin. Cotton prevents these conditions and helps maintain a balanced vaginal environment.

    Women should choose underwear made from 100% cotton for daily wear. The fabric works naturally with the body to regulate temperature and moisture levels. This simple choice can reduce the risk of yeast infections and bacterial vaginosis.

    Those who prefer synthetic fabrics for certain activities should look for styles with a cotton gusset. The cotton panel provides protection where it matters most. However, pure cotton options offer the best support for vaginal health.

    Normal vaginal discharge during pregnancy and when to get help

    Maintain balanced pH by using mild, unscented soap for external cleaning only

    The vagina naturally cleans itself and maintains its own healthy pH balance between 3.5 and 4.5. This acidic environment helps prevent harmful bacteria from growing. However, the external area around the vagina, called the vulva, can be gently cleaned with the right products.

    People should choose a mild, fragrance-free soap made for sensitive skin. Scented products and harsh soaps can disrupt the natural pH levels and cause irritation. These products may lead to dryness, itching, or an imbalance in healthy bacteria.

    It’s important to clean only the outside area. Soap should never go inside the vaginal canal, as this can harm the natural balance. People can use warm water and a small amount of gentle cleanser on the vulva during their regular shower routine.

    After cleansing, thorough rinsing removes all soap residue. This simple approach helps support the body’s natural processes while keeping the external area fresh and clean.

    Stay hydrated and eat probiotic-rich foods like yogurt to support healthy bacteria

    Drinking enough water each day helps the body maintain proper moisture levels throughout all tissues, including the vaginal area. Hydration supports the natural production of healthy discharge and helps flush out unwanted bacteria from the urinary tract.

    Probiotics are live bacteria that benefit gut health and vaginal health. These helpful microorganisms work to keep the vaginal pH balanced and prevent harmful bacteria from taking over. Yogurt contains beneficial bacteria like L. acidophilus, which promotes the growth of good bacteria in both the gut and vaginal area.

    Not all yogurt products contain the same amount of probiotics. Look for labels that mention “live active cultures” to get the most benefit. Plain yogurt without added sugars provides better support for healthy bacteria than sweetened varieties.

    In addition to yogurt, other fermented foods like kefir and sauerkraut also contain probiotics. However, yogurt remains one of the easiest and most accessible options for daily consumption. Add fresh fruit or oats to plain yogurt for a simple snack that supports vaginal health.

    Change out of wet clothes promptly to avoid creating a breeding ground for bacteria

    Wet clothes create the perfect environment for bacteria and yeast to grow. The combination of moisture and warmth against the skin allows these microorganisms to multiply quickly. This can lead to yeast infections and other vaginal health problems.

    After exercise, a swim, or any activity that makes clothes damp, a person should change right away. Even sitting in a wet bathing suit for just an hour or two can cause issues. The vaginal area needs to stay dry to maintain its natural, healthy balance.

    Cotton underwear and other breathable fabrics help wick away moisture throughout the day. However, once clothes become wet from sweat or water, they lose this ability. Instead, they trap moisture against the skin and block airflow.

    The simple act of changing into dry clothes helps prevent uncomfortable infections and irritation. A quick shower after physical activity, followed by fresh, dry clothes, protects vaginal health and maintains comfort.

    When to speak to your midwife, GP or urgent care

    You should always seek advice if you’re worried, even if your symptoms sound mild. Trusting your instincts is part of looking after yourself and your baby.

    What to expect from primary care and maternity triage

    Depending on where you live in the UK, you might be advised to:

    • Call your midwife, GP, maternity triage line or NHS 111
    • Attend your GP surgery, walk-in centre or urgent care
    • Go straight to the maternity unit or A&E in an emergency

    At your appointment, you may be offered:

    • A chat about your symptoms and pregnancy
    • An examination of your bump and sometimes an internal examination
    • Swabs to check for infections such as thrush, bacterial vaginosis, or an STI
    • Treatment if needed – often a cream, pessary or pregnancy-safe antibiotic

    You always have the right to ask questions, see your medical records, and understand why a particular test or treatment is being recommended. If you’re using private health care, it’s reasonable to ask about price transparency before tests or treatments too.

    Normal vaginal discharge during pregnancy – FAQs

    Is it normal to have discharge during pregnancy?

    Yes. It’s very common to have more vaginal discharge in pregnancy. This helps protect the womb from infection and is usually nothing to worry about if:

    • It’s clear, off-white or milky
    • It doesn’t smell strong or unpleasant
    • You don’t have itching, soreness or pain

    If anything changes, speak to your midwife or GP.

    What kind of discharge is normal during pregnancy?

    Normal pregnancy discharge is usually:

    • Thin, slippery or slightly creamy
    • Clear, white or pale in colour
    • Mild-smelling

    Discharge that is green, yellow, grey, very thick and lumpy, very watery, or strongly smelly should be checked.

    Is white discharge normal during the first, second and third trimester?

    In most cases, white discharge can be normal at any stage of pregnancy, as long as:

    • The colour is white or off-white (not bright yellow or green)
    • There’s no strong or fishy smell
    • There’s no itching, burning or soreness

    If white discharge becomes thick and clumpy and you’re itchy or sore, it might be thrush, which is common in pregnancy and usually easily treated.

    Is it ever normal not to have discharge when you’re pregnant?

    Yes, some people naturally have less discharge than others. If you feel well and your antenatal checks are normal, not noticing much discharge isn’t usually a problem. If you suddenly have no discharge at all after having a lot, or you’re worried, mention it at your next appointment for reassurance.

    Where to get more support

    If you’re feeling anxious about discharge and pregnancy, remember you don’t have to figure it out alone. Your midwife, GP, health visitor and local sexual health clinic are there to support you – both physically and emotionally.

    You can also find reliable information from trusted UK sources such as:

    • NHS pregnancy pages on vaginal discharge and vaginal bleeding
    • National Institute for Health and Care Excellence (NICE) guidance on antenatal care and managing minor symptoms
    • Tommy’s for pregnancy symptom checkers and support

    If you’re ever unsure whether what you’re seeing is normal vaginal discharge during pregnancy, it’s always ok – and always sensible – to ask.

    Sponsored resource: tracking discharge and other symptoms

    If you’re noticing patterns in your discharge or other symptoms across your cycle and pregnancies, you might find it useful to track them over time. Digital tools can sometimes help you understand what’s typical for you and what’s new.

    You can learn more about changes like thick white discharge before your period (outside of pregnancy) via this sponsored resource from Ubie Health: thick white discharge before period.

    Remember, online tools can be helpful, but they should never replace personalised advice from your GP, midwife or another qualified health professional.

    Medical disclaimer: This article is for general information only and is not a substitute for medical advice. Always speak to your GP, midwife or another qualified health professional about your own health or any symptoms that worry you.

    Collaborative feature post in partnership with Ubie Health.

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