Breastfeeding in the first few weeks: what nobody warns you about

Breastfeeding is often described as "natural" as though that means effortless. It's natural in the sense that it's what the body evolved to do — but it requires learning, just like any physical skill. Most mothers and babies take several weeks to get it working well, and it's common to find the early days harder than expected.

The first hour

If there are no complications, skin-to-skin contact in the first hour after birth significantly improves breastfeeding success. Newborns have a reflex in this early period that helps them find the breast and latch. The first feed doesn't have to go perfectly — it rarely does — but initiating early sets a good foundation.

Colostrum — the first milk — is thick, yellowish, and produced in small quantities. This is appropriate because a newborn's stomach is very small (about the size of a marble in the first day). Colostrum is concentrated and rich in antibodies. The small volume is not a sign that there isn't enough.

Days 3–5: milk "coming in"

Mature milk replaces colostrum around days 3–5, triggered by the delivery of the placenta. This often comes with a period of breast engorgement — breasts become full, firm, and uncomfortable. Feeding frequently helps manage this. If engorgement is severe, hand-expressing a small amount before feeds can help the baby latch on an engorged breast.

The latch

A good latch is the single most important technical element of breastfeeding. A poor latch causes nipple pain, reduces milk transfer, and can lead to cracked or bleeding nipples. Signs of a good latch: the baby has a wide mouth, takes in not just the nipple but a substantial amount of areola, the chin is touching the breast, and feeding is not painful (initial discomfort in the first few seconds can be normal; sustained pain throughout the feed is not).

If you're experiencing pain beyond the first few seconds of latching, it's worth getting help from a midwife, health visitor, or lactation consultant rather than pushing through. Pain is usually a sign of a fixable problem.

Is the baby getting enough?

Output is the best indicator of input. By day 4–5, a breastfed baby should be having at least 5–6 wet nappies per day and regular bowel movements. Weight loss is normal in the first few days (up to 7–10% of birth weight), and most babies are back to birth weight by weeks 2–3. Regular weigh-ins in the early weeks track this.

Cluster feeding — periods where the baby feeds very frequently, sometimes constantly for several hours — is normal and not a sign of insufficient milk. It often coincides with growth spurts and helps establish supply. It's exhausting, but it's temporary.

Supply concerns

True low milk supply exists but is less common than perceived. The sensation of the breasts feeling less full after the first few weeks doesn't indicate lower supply — it indicates that supply has regulated to match demand, which is normal. The best way to maintain supply is frequent, effective feeding. Supplementing with formula without medical advice can reduce supply by reducing the stimulation that drives milk production.

If you're worried about supply, the first step is assessing the latch and feeding frequency. A lactation consultant can help identify and address most supply problems.