On this page
Dr. Chrysoula I. Liakou MD, PhD
- Treated online: Yes, for assessment and reassurance: leaking colostrum from both breasts is recognised by video and needs no treatment; blood-stained discharge, discharge from one breast or a single duct, or any discharge with a lump, dimpling or a newly pulled-in nipple is examined in person.
- What it is: colostrum, the first milk, produced from about 16 weeks as prolactin rises; it leaks in small amounts in many women from mid-pregnancy, is clear, yellow, orange or milky, and is unrelated to the milk supply, which starts 2 to 4 days after birth.
- Colours: clear, yellow or milky is colostrum; sticky brown or rust-coloured can be old blood from rapidly growing ducts, usually benign but always examined; green or dark discharge suggests duct ectasia; bright red blood from one duct needs a breast clinic without delay.
- Expressing: hand-expressing colostrum before birth is advised only from 36 to 37 weeks and only on maternity advice, for example with diabetes in pregnancy, because nipple stimulation can bring on contractions; leaking itself needs no action.
- How long: leaking can start at 16 weeks or not until after the birth, continues until delivery and then becomes milk; it often increases in the last weeks and during sex or warm showers, and stops within days of birth if you do not breastfeed.
- Emergency: nipple discharge is never a 112 emergency; call 112 only for severe illness with high fever, shivering, confusion or a racing heart, which can be sepsis from a breast abscess.
Colostrum leaking from both breasts is normal in pregnancy and safe to discuss by video. Arrange an in-person breast examination promptly, through a doctor or your midwife, if the discharge is blood-stained, comes from one breast or a single duct only, or comes with a new lump, skin dimpling, or a newly pulled-in nipple. Get medical advice the same day for a hot, swollen, painful breast with fever. If you feel severely unwell with shivering, confusion or a racing heart, call 112.
Is it normal to leak fluid from your nipples during pregnancy?
Yes, usually. From the second trimester the breasts start making colostrum, the thick, clear-to-golden first milk, and small leaks from one or both nipples are a normal part of pregnancy. Leaking a lot, a little or not at all are all normal. The exceptions that need an in-person breast examination are blood-stained discharge, and any discharge alongside a new lump.[1] A doctor can assess your symptoms by video and explain which checks you need and how urgently.
Leaking often starts as a few drops on the inside of a bra cup, sometimes as early as around 16 weeks, and tends to increase towards the end of pregnancy.[5] Warmth, sex, a hot shower and nipple friction all encourage it, which is why it can appear at unpredictable moments. Colostrum production is driven by pregnancy hormones and happens whether or not anything escapes, so a completely dry pregnancy says nothing about your ability to feed a baby later.[4]
How an online consultation helps with nipple discharge in pregnancy
- Reassurance with reasons: the doctor explains what colostrum is, why it leaks when it does, and why the amount varies so much between women, so you are not left matching yourself against forum stories at 2am.
- The right questions, asked properly: one breast or both, one opening on the nipple or several, spontaneous or only when squeezed, and the exact colour. Those details are what separate normal from needs-examination.
- Urgent things routed fast: blood-stained discharge or a lump is not watched and waited on. The doctor says so plainly, arranges the referral, and tells you exactly what the in-person examination will involve.
- Practical care that works: breast pads, washing, skin protection, and honest advice on expressing colostrum before birth, including when it is recommended and when it should wait.
What the doctor checks in an online nipple discharge consultation
The assessment is structured, because the pattern of the discharge carries most of the diagnostic information. The doctor will typically work through:
- Colour and consistency: clear, yellow, milky, green-grey, brown or blood-stained. Colostrum ranges from watery to thick and golden; visible blood changes the plan.
- One side or both: discharge from both breasts is almost always hormonal and benign; discharge from one breast only, especially from a single duct opening, is treated as a physical finding that needs examination.[1]
- Spontaneous or provoked: fluid that appears on its own versus only with squeezing. Repeated squeezing to check is a common habit that keeps discharge going.
- Lumps, pain and skin changes: any new lump, hardening, dimpling, nipple pulling inwards, or a crusting, eczema-like rash on the nipple itself, all of which move the consultation towards examination.
- Fever and redness: a hot, painful, swollen segment of breast with fever suggests infection and needs same-day review.[3]
- Your stage of pregnancy and history: how many weeks you are, previous breast surgery or implants, previous breastfeeding, and any personal or family history of breast cancer, which lowers the threshold for examination.
- Medicines: some drugs raise prolactin and increase milky discharge; the doctor checks your list rather than assuming pregnancy explains everything.
What does the colour of nipple discharge mean in pregnancy?
Colour is a guide, not a verdict. Clear, yellow, golden or milky fluid from both breasts in pregnancy is colostrum and normal. Thicker green-grey discharge can come from harmless changes in the ducts. Brown, rust-coloured or frankly bloody discharge is the colour that always changes management: it is often benign in pregnancy, but it is confirmed by examination, never by video.
Clear, yellow or milky
This is colostrum, the concentrated first milk the breasts build from mid-pregnancy onwards.[4] It can look surprisingly thick and orange-yellow early on and becomes paler and more plentiful towards term. Dried flakes on the nipple and small crusts are part of the same picture. No treatment is needed beyond comfortable pads and washing with water rather than soap, which dries the skin.
Green, grey or sticky
Multi-duct, both-sided discharge in these colours is usually related to benign duct changes and is generally not worrying in itself. It still deserves a mention in your consultation, because the doctor wants the full pattern: colour plus sidedness plus whether it appears spontaneously.
Brown, rusty or blood-stained
Pregnancy grows the milk ducts quickly, and that rapid growth can bleed a little; a small benign growth inside a duct, called a papilloma, is another common cause. Some women see rusty or blood-tinged colostrum in late pregnancy or early breastfeeding from engorged blood vessels. All of that is real and usually harmless, and none of it changes the rule: blood-stained discharge gets an in-person breast examination, promptly, every time, because a small number of cases have a serious cause and examination is how they are found.[1][2]
When should I worry about nipple discharge in pregnancy?
Four features matter most: blood-stained or persistently brown discharge; discharge from one breast only, particularly from a single duct; any new lump, skin dimpling or nipple change alongside the discharge; and a hot, painful breast with fever. Any of these needs an in-person assessment, arranged promptly rather than watched. Everything else, in a pregnancy that otherwise feels normal, is very likely colostrum doing what colostrum does.[1]
It is worth saying clearly: breast cancer in pregnancy is rare, and normal colostrum leakage has nothing to do with it. The reason doctors examine blood-stained or one-sided discharge is not because it is usually serious, but because the serious causes are only ever found by looking. Referral criteria for breast symptoms are explicit in European and UK guidance, and a video doctor who cannot examine you can still start that pathway with a referral letter in the consultation.[2]
Is my nipple discharge suitable for online care?
This is the framework the doctors use to sort discharge in pregnancy, aligned with cited guidance:
Swipe sideways to compare →
| Discharge pattern | Likely first step | Suitable for online care? | When referral or in-person care is needed |
|---|---|---|---|
| Small leaks of clear, yellow or milky fluid from both breasts, no other changes | Reassurance, breast pads, normal antenatal care | Yes | If the colour changes to bloody, or a lump or skin change appears |
| Leaking that suddenly increases, with tender full breasts | Video review of the pattern; usually normal progression of pregnancy | Usually yes | If one-sided, painful in one spot, or accompanied by fever |
| Discharge from one breast only, or from a single duct, or persistent without squeezing | Prompt in-person breast examination, arranged in the consultation[1] | Assessment and referral, not diagnosis | Always; single-duct and one-sided discharge is examined |
| Blood-stained discharge, or any discharge with a new lump, dimpling or nipple change | Urgent in-person breast assessment with a referral letter[2] | No, beyond arranging urgent care | Always, urgently |
| Hot, swollen, painful area of breast with fever | Same-day review; antibiotics when infection is confirmed[3] | Sometimes, same day | Worsening on antibiotics, a tender fluid-filled lump, or feeling very unwell |
Not sure which row is you? A doctor can tell you in one consultation.
See available times →Treatment options for nipple discharge in pregnancy
What you can do yourself
Normal colostrum leakage needs comfort measures, not medicine. Washable or disposable breast pads, changed whenever damp, keep skin dry and clothes unmarked; a well-fitted, non-underwired bra helps as the breasts grow. Wash with warm water and skip soap directly on the nipples, which strips the skin and encourages cracking. A plain emollient settles dry or irritated skin. Resist the urge to squeeze to see whether fluid is still coming: squeezing stimulates more discharge and keeps the cycle going. The small bumps on the areola (Montgomery glands) also secrete moisturising fluid; they are normal, and they do not need cleaning away.
Treatment after your consultation
There is deliberately little to prescribe here, and honest care says so: no medicine should be used to stop normal colostrum production in pregnancy, and leakage itself is not a condition to treat. Where the story suggests breast infection, the doctor can prescribe an antibiotic compatible with pregnancy, such as flucloxacillin, after assessment; antibiotics are only prescribed when there are genuine signs of bacterial infection, because they do nothing for normal hormonal discharge.[3] A prescription is never issued without a consultation. Where examination is what you need, the consultation delivers something different and just as concrete: a referral letter and a clear explanation of what the breast clinic will do. If your doctor decides you need to be seen in person, you get a full refund and clear directions to the right care.
Should I express colostrum before the birth?
Only from about 36 weeks, and only after discussing it with your midwife or doctor. Collecting colostrum in late pregnancy is genuinely useful for some women, particularly those with diabetes, whose babies may need extra feeds soon after birth. Before that point, deliberate expressing is not advised without medical guidance, because nipple stimulation releases oxytocin and can trigger contractions.
If harvesting is right for you, your midwife or maternity unit will usually show you hand expression and give you small syringes for freezing what you collect. A video doctor can talk through whether you are a good candidate and what to ask at your next antenatal visit, which is a better use of ten minutes than any amount of guesswork.
When it might be something else
Not everything on the nipple is discharge. An itchy, flaky, weepy rash on both nipples is usually eczema or irritation from friction and pads, and responds to emollients and, where needed, a short course of treatment agreed with a doctor. A crusting, scaly change that sits stubbornly on one nipple and does not settle is examined, because persistent one-sided nipple change is investigated in the same way as a lump.[1] Deep breast pain with a shiny, tight, swollen breast needs review rather than creams. And plenty of pregnancy niggles simply share the neighbourhood: heartburn pushing up behind the breastbone is indigestion in pregnancy rather than a breast problem, and general breast fullness and tingling are the hormones doing their job. Discharge is one of many pregnancy conditions the doctors assess online, alongside everyday companions such as constipation in pregnancy.
When nipple discharge is assessed online, and when you need in-person care
Assessed online: a licensed doctor on Mobi Doctor handles typical both-sided colostrum leakage at any stage of pregnancy; questions about pads, skin care, cracked or irritated nipples; sudden increases in leaking that worry you; advice on expressing colostrum before birth; and early review of a sore, red area to judge whether infection is likely.
In-person care: blood-stained, brown or persistent one-sided discharge, discharge from a single duct, and any discharge with a new lump, skin dimpling or nipple change, all of which get a prompt in-person breast examination with a referral letter written in the consultation;[2] a suspected abscess (a tender, fluid-filled lump with fever), the same day; and anyone with a personal history of breast cancer and a new breast symptom, whose follow-up team should see them. Video assessment can often provide enough information to sort normal from needs-examination, and that sorting is the point.
When to get in-person care
Arrange a prompt in-person breast examination, through a doctor, your midwife or your maternity unit, for blood-stained discharge, one-sided or single-duct discharge, or any discharge with a new lump, skin dimpling or nipple change. Get same-day care for a hot, swollen, painful breast with fever. If you feel severely unwell with fever and shivering, confusion, a racing heart or breathlessness, call 112: those are signs of serious infection. And contact your midwife or maternity unit without delay about any pregnancy warning sign, such as bleeding or reduced baby movements, whatever your breasts are doing.
How Mobi Doctor works
- Book a time that suits you: open daily 7am–11pm CET. You can see a doctor over video, usually within 15 minutes. No subscription, exact price up front.
- Speak to a licensed doctor about nipple discharge in pregnancy: a private video call: you describe what you feel, the doctor asks what matters, and you agree the right plan together.
- Get a clear answer and next steps: if a referral or treatment is needed, it follows the consultation. If your doctor decides you need to be seen in person, you get a full refund.
No sign-up needed
Nipple discharge in pregnancy can have more than one cause. Tick every symptom you have to see each page that mentions it. It finds the right page, not a diagnosis: a doctor gives you that on a video call.
Tap the body — an area or a point — to browse symptoms anywhere
Similar symptoms, different condition? Breast Pain in Pregnancy can start the same way. Compare them, or look up any other symptom in the full symptom checker.
Frequently asked questions about nipple discharge in pregnancy
What causes nipple discharge in pregnancy?
Nipple discharge in pregnancy is almost always colostrum, made by the milk glands from about 16 weeks as prolactin rises and oestrogen and progesterone build the ducts; it leaks when the breasts are full, warm or stimulated. Less common causes are bleeding from fast-growing ducts, a small benign growth inside a duct (papilloma), widened ducts (duct ectasia), infection, and, rarely, a breast cancer, which is why one-sided or bloody discharge is examined.
What does the colour of nipple discharge mean in pregnancy?
Clear, yellow, orange or milky discharge from both breasts is colostrum and normal. Sticky brown or rust-coloured discharge is often old blood from ducts growing quickly, usually harmless but examined. Green, grey or black discharge suggests duct ectasia, a benign widening of the ducts. Bright red blood, discharge from a single duct or one breast only, or a watery clear discharge from one side, needs an in-person breast examination.
Can an online doctor help with nipple discharge during pregnancy?
Yes. Leaking colostrum is assessed well by video: the doctor confirms the pattern, explains what to expect through pregnancy and after birth, and gives practical advice on pads and skin care. Any discharge that is blood-stained, one-sided, from a single duct or paired with a lump is directed to an in-person breast examination, usually with an ultrasound scan, rather than reassured about remotely. No prescription is needed for colostrum.
When do breasts start leaking in pregnancy?
Colostrum production begins in the second trimester, and some women notice small leaks from around 16 weeks, often as dried yellow crusts on the nipple rather than a flow. Many notice nothing until the last weeks, and some never leak before birth; both are normal. Leaking often increases towards term, during sex, in warm showers and when you hear a baby cry, because all of these release the hormones that let milk down.
Does leaking colostrum mean labour is starting?
No. Leaking reflects hormone levels, not labour, and can happen weeks or months before your due date; it often increases towards term simply because colostrum production rises. The signs that labour is starting are regular contractions, waters breaking or a show. Leaking paired with those needs the maternity unit for the labour, not for the leaking.
What does blood-stained nipple discharge mean in pregnancy?
Often something benign: the milk ducts grow quickly in pregnancy and can bleed slightly, giving brown, rusty or blood-streaked colostrum, and a small non-cancerous growth inside a duct, an intraductal papilloma, is another common cause. Because a breast cancer can also present this way, blood-stained nipple discharge, especially from one breast or a single duct, is always examined in person and usually scanned, which is safe in pregnancy.
Should I express colostrum before my baby is born?
Only from about 36 weeks, and only after discussing it with your midwife or doctor. Some women, for example those with diabetes in pregnancy, or expecting a baby who may need extra feeds early, are taught to hand-express and freeze colostrum in the last weeks; earlier or unsupervised expressing is not advised because nipple stimulation can trigger contractions. Leaking on its own is never a reason to express.
Does leaking, or not leaking, say anything about my milk supply?
No. How much nipple discharge you have in pregnancy has no connection to how much milk you will make. Milk supply is driven by the hormone changes after the placenta is delivered and by how often the baby feeds in the first days, not by colostrum leaking beforehand; women who never leak a drop breastfeed perfectly well, and heavy leakers can still need feeding support.
How long does nipple discharge last in pregnancy?
Leaking colostrum can begin around 16 weeks, continue through the pregnancy and increase near term; after the birth it becomes milk within 2 to 4 days if you breastfeed, and stops within a few days to a week if you do not, as prolactin falls, sometimes with a day or two of fullness. Nipple discharge that continues months after feeding has stopped, or starts outside pregnancy, is examined.
What can I do myself about leaking breasts in pregnancy?
Use breast pads and change them when damp so the skin does not stay wet, wear a supportive cotton bra, rinse the nipples with water rather than soap, let them air-dry, moisturise stretched skin with a plain emollient, press firmly on the nipples with your forearms if a let-down starts at an awkward moment, and keep a spare top at work. Do not squeeze or express to stop leaking, which increases it.
How can I prevent sore nipples from leaking in pregnancy?
Keep the skin dry with frequently changed pads, avoid soap, perfumed products and friction from a rough or poorly fitting bra, moisturise with a plain emollient or a little expressed colostrum, and treat nipple eczema early with emollient and a short mild steroid course if advised. Cracked, weeping or crusted nipples that do not heal within a couple of weeks are examined, because infection and a rare nipple skin cancer can look like eczema.
Is it colostrum, infection or something else?
Colostrum is clear to yellow, from both breasts, painless and often most noticeable in the last weeks. Infection (mastitis) adds a hot, red, painful area with fever and sometimes pus-like discharge. Brown or bloody discharge from one duct suggests a papilloma or duct changes; green discharge suggests duct ectasia; crusting with a scaly rash is nipple eczema. The doctor sorts them by the story and a photo, and anything but colostrum gets an examination.
- Breast cancer (recognition and referral): Clinical Knowledge Summary, NICE, National Institute for Health and Care Excellence, revised 2023.
- Suspected cancer: recognition and referral (NG12), NICE, National Institute for Health and Care Excellence, 2015 (updated 2023).
- Mastitis and breast abscess: Clinical Knowledge Summary, NICE, National Institute for Health and Care Excellence, revised 2024.
- Breastfeeding, WHO, World Health Organization, 2025.
- Breast changes during pregnancy, HSE, Health Service Executive Ireland, accessed August 2026.
- Nipple discharge, NHS, National Health Service (UK), reviewed January 2024.
This page is for information only and is not a substitute for a medical consultation. Guideline links are provided for transparency; treatment decisions are made with your doctor.
Related conditions
From the Mobi Doctor podcast
The 10 Most Common Travel Illnesses
The travel illnesses doctors see most often in Europe, and how to handle each one away from home.
Listen · 23 Feb 2026 → Podcast · 13:26How to Stay Healthy on a Long Flight
Practical steps for circulation, hydration and infection risk before, during and after a long flight.
Listen · 23 Feb 2026 → Podcast · 15:41Debunking Gut Health Myths
What the evidence really says about gut health, and the popular claims that do not hold up.
Listen · 23 Feb 2026 →Speak to a doctor about nipple discharge in pregnancy over video, usually within 15 minutes
Licensed doctors · open daily 7am–11pm CET · exact price before payment
See available times →