The Breastfeeding Basics You Need to Know Before Baby Arrives

If you’re pregnant and starting to think about breastfeeding, you’ve probably already noticed there’s a lot of conflicting advice out there. Some of it is genuinely useful. Some of it makes the whole thing sound far more complicated than it needs to be. Here’s what’s actually true: breastfeeding is a biological process, but it’s also a skill that you and your baby learn together, often with a fair few wobbles along the way. Knowing what to expect before your baby arrives makes a real difference, so let’s go through the basics properly.

Why Breastfeeding Can Feel Harder Than It “Should”

For most of human history, women learned to breastfeed by watching other women do it. Mothers, sisters, aunts and grandmothers were often close by, and a new mum would have had plenty of hands-on help and reassurance in those first difficult days. In a lot of Western countries now, that’s not the reality for most families. You might go from pregnancy straight into being sent home with a newborn and expected to just get on with it, sometimes without ever having seen another woman breastfeed up close.

That gap in everyday experience is a big part of why breastfeeding feels so much harder than people expect. It’s not that something is wrong with you if you find it tricky at first. Latching, positioning and reading your baby’s hunger cues all take practice, and it’s completely normal to need help getting there, whether that’s from a midwife, health visitor, breastfeeding counsellor or a lactation consultant. If you’re premature, or your baby has a health issue such as tongue-tie, jaundice or low muscle tone, breastfeeding can take extra patience and often extra support too. None of that means it won’t work out, it just means you shouldn’t go it alone if you’re struggling.

Why Breastfeeding Is Worth the Effort

Breast milk changes constantly to suit your baby’s needs, which is honestly one of the more remarkable things about it. In the first few days you produce colostrum, a thick, yellowish milk that’s low in volume but packed with antibodies and nutrients. It’s exactly the right amount for a newborn’s tiny stomach, and it gives your baby’s immune system a real head start. By around day three to five, your milk starts to transition and becomes higher in volume, thinner, and richer in fat, sugar, water and protein to support rapid growth.

Breast milk is also easier for babies to digest than formula, which matters especially for premature or small babies. And it contains living cells, antibodies and enzymes that formula simply can’t replicate, because they change from feed to feed depending on what your baby is exposed to. Research from organisations like the NHS and WHO has linked breastfeeding with a lower risk of things like ear infections, gastrointestinal infections, respiratory illness and eczema in babies, and with some protective effects for mums too, including a reduced risk of certain breast and ovarian cancers. Some studies have suggested links to lower rates of childhood obesity and even some cancers, though the evidence for those is less clear cut, so it’s worth being cautious about how strongly those claims are made.

None of this is meant to guilt anyone who formula feeds, for whatever reason. It’s simply useful to understand why breastfeeding is recommended and where the real benefits lie, so you can make an informed decision for your own family. If you have questions about your specific situation, your GP, midwife or health visitor is the right person to ask.

How Your Milk Supply Works

Milk supply runs on demand and response. The more often and effectively your baby feeds, the more milk your body is signalled to make. This is exactly why it’s not usually a good idea to start pumping heavily in the first days or weeks unless you have a specific medical reason to. Frequent pumping on top of frequent feeding can send confusing signals to your body and lead to oversupply, engorgement or blocked ducts. Let your baby set the pace early on.

Most mothers make enough milk for their baby, even though it’s an extremely common worry. Genuine low supply does happen, but it’s less common than people fear, and it can often be improved with the right support (more frequent feeding, a better latch, or addressing an underlying issue). If you’re worried about supply, get it checked by a midwife, health visitor or lactation consultant rather than guessing, because the signs of “not enough” are easy to misread.

What to Expect, Stage by Stage

Birth to day one or two: Your body makes colostrum in small amounts, usually just a teaspoon or so per feed, which is all a newborn’s stomach can hold anyway. If you can, try to breastfeed within the first hour after birth, ideally with skin to skin contact, since this helps trigger your milk supply and calms your baby. If a straightforward first feed isn’t possible because of a caesarean, a difficult birth or time in the neonatal unit, that’s okay too. You can still get breastfeeding going once you and your baby are ready, it just might take a little longer to establish.

First 24 to 48 hours: Babies often sleep heavily after the effort of being born, and some will nuzzle or lick at the breast without properly latching. Feeds can feel disorganised and short. Use every waking moment to offer the breast, and don’t be afraid to gently wake a very sleepy baby for feeds if a midwife has suggested this, particularly if your baby is jaundiced or has lost more weight than expected.

Day three to five: This is usually when your milk “comes in” and changes from colostrum to more mature milk, often described as turning from golden to white. Your breasts may suddenly feel fuller, firmer, and possibly a bit tender or lumpy. Babies typically feed 8 to 12 times in 24 hours at this stage, often every 1.5 to 3 hours, with feeds lasting somewhere around 15 to 20 minutes. There’s no real schedule yet, and cluster feeding (lots of short, closely spaced feeds, often in the evening) is completely normal.

Four to six weeks: Your baby gets more efficient at feeding, your supply regulates, and your breasts often start to feel softer even though you’re still making plenty of milk. Feeds tend to become quicker and may space out a bit more, though every baby is different and growth spurts (commonly around 2 to 3 weeks, 6 weeks, and 3 months) can temporarily bring feeds closer together again.

Getting Breastfeeding Established

A few practical things genuinely help in those early weeks:

• Try to feed within the first hour if you can, and go skin to skin as much as possible in the early days.
• Ask for help with positioning and latch from a midwife or lactation consultant while you’re still in hospital or birth centre, not just if something feels wrong. Getting it checked early can prevent weeks of soreness.
• Feed frequently and on cue rather than by the clock, especially in the first few weeks.
• If you’re worried about pacifiers or bottle teats interfering with latch, current guidance generally suggests waiting until breastfeeding is well established, often around 3 to 4 weeks, before introducing a dummy regularly. That said, this varies by baby, so it’s worth discussing with your health visitor, particularly since dummies are also recommended at sleep times from early on as part of safer sleep guidance for reducing SIDS risk. It’s a genuine balancing act, not a straightforward rule.
• Don’t wait until you’re in real pain or distress to ask for help. Breastfeeding shouldn’t hurt once it’s established, and persistent pain almost always has a fixable cause.

Signs of a Good Latch

There’s more than one “correct” position for breastfeeding, but a good latch has some fairly consistent signs regardless of how you’re holding your baby:

• It feels comfortable. Some tugging or pulling sensation is normal, especially at the very start of a feed, but sharp, stabbing or burning pain isn’t.
• Your baby’s body is turned in towards you, tummy to tummy, so they don’t have to twist their head to feed.
• Your baby’s mouth is wide open and takes in a large mouthful of breast, not just the nipple. You should see more areola visible above the top lip than below.
• Their chin is pressed into your breast and their nose is clear, or just lightly touching.
• You can hear or see rhythmic swallowing rather than just fast, shallow sucking.
• Their lips are flanged outwards, like fish lips, rather than tucked in.
• You may notice their ears wiggle slightly as they suck and swallow.

If something feels off and you can’t work out why, it’s genuinely worth having a midwife, health visitor or lactation consultant watch a feed in person. Latch problems are one of the most common and most fixable reasons for pain and low milk transfer.

Is Your Baby Getting Enough Milk?

A newborn’s stomach is tiny, roughly the size of a cherry or hazelnut on day one, growing to about the size of an egg by two weeks old. These are rough guides rather than exact figures, but they explain why frequent, small feeds are completely normal and not a sign that something’s wrong.

It’s also normal for babies to lose some weight in the first few days after birth, usually up to around 7 to 10% of their birth weight, before starting to gain it back, typically by around day 10 to 14. Your midwife or health visitor will track this at your baby’s weight checks, so you don’t need to weigh things up yourself.

Signs that feeding is generally going well include:

• Plenty of wet nappies, at least six a day by day five or six, with pale or clear urine rather than dark or strong smelling.
• Regular bowel movements, which for breastfed babies are often soft, yellowish and quite frequent.
• Your baby settles reasonably well after most feeds, even if they’re not asleep the whole time.
• Alert, responsive periods alongside their sleep, rather than being constantly drowsy or lethargic.
• Steady weight gain over time, checked at your health visitor appointments.

If you’re worried your baby isn’t feeding well, don’t sit on it. Contact your midwife, health visitor or GP so they can check things properly rather than trying to work it out from advice online, since a genuine feeding problem is much easier to sort out early.

Medications and Illness While Breastfeeding

Most medications are compatible with breastfeeding, but not all of them, and small amounts of many drugs do pass into breast milk. Always tell your doctor, pharmacist or health visitor that you’re breastfeeding before starting any new medication, including over the counter ones, so they can check it’s suitable. If you have a chronic health condition that needs medication that isn’t considered safe alongside breastfeeding, your doctor will talk you through the options, and in some cases formula feeding, or a mix of both, may be the safer choice for you and your baby.

Common illnesses like colds, coughs, flu and stomach bugs aren’t passed to your baby through breast milk. In fact, when you’re exposed to a bug, your body starts producing antibodies against it that go straight into your milk, which can actually help protect your baby while you’re unwell. There’s rarely a need to stop breastfeeding just because you’ve caught something, though it’s always sensible to check with your GP or pharmacist if you’re unsure, especially before taking any medication.

Breastfeeding rarely goes exactly to plan, and that’s fine. What actually helps is knowing roughly what to expect, having realistic patience for the learning curve, and knowing who to call when something doesn’t feel right. Whether you end up exclusively breastfeeding, combination feeding or formula feeding, the goal is the same: a fed, thriving baby and a mum who isn’t struggling in silence.