Your First Week of Breastfeeding: What to Expect

The first week of breastfeeding is often described as the most intense. Your body is doing something extraordinary — and your baby is learning a completely new skill. Whatever you're feeling right now — joy, overwhelm, exhaustion, love — is completely normal.

Here's what to expect in those early days, and how to know when to ask for help.

Day 1–2: Colostrum — Liquid Gold

In the first days after birth, your breasts produce colostrum rather than mature milk. Colostrum is thick, golden-yellow, and produced in small quantities — often just a few millilitres per feed. This is perfectly designed for your newborn's tiny stomach.

Colostrum is packed with:

• Antibodies that protect against infection
• Growth factors that help your baby's gut mature
• Nutrients in a highly concentrated, easy-to-digest form

Your baby only needs small amounts, so don't worry if it seems like very little. As long as your baby is feeding 8–12 times in 24 hours and has at least 1–2 wet nappies on day one, things are on track.

Day 3–5: Milk Coming In

Around day 3–5, your milk usually "comes in" — transitioning from colostrum to mature milk. You might notice:

• Breasts feeling fuller, heavier, and firmer
• A sudden increase in the amount of milk
• Your baby seeming satisfied after feeds
• Slight leaking between feeds

Engorgement is common at this stage. Your breasts may feel hard, swollen, or uncomfortable. Feeding frequently — at least every 2–3 hours — helps enormously. A warm flannel before feeds and a cold pack afterwards can also ease discomfort.

Signs That Feeding is Going Well

By the end of the first week, look for these reassuring signs:

✓ Feeding 8–12 times in 24 hours — frequent feeding is normal and important for building your milk supply

✓ Comfortable latch — you may feel a strong drawing sensation, but not pain. If you feel nipple pain throughout the feed, ask for help with positioning and latch

✓ Audible swallowing — you'll hear your baby swallowing, especially once your milk has come in

✓ Wet and dirty nappies — by day 5, at least 5–6 wet nappies and 2–3 yellow, seedy stools per day is expected

✓ Regaining birth weight — most babies lose a little weight in the first few days and regain it by 10–14 days

When to Ask for Help

Don't wait if you notice any of the following:

• Nipple pain throughout feeds — a good latch shouldn't hurt beyond the first few seconds
• Clicking or smacking sounds during feeding (can indicate a shallow latch or tongue tie)
• Baby not satisfied after long feeds
• Fewer wet nappies than expected
• Persistent weight loss beyond the first few days
• Breast pain, redness, or hard lumps (could indicate blocked ducts or mastitis)

You Don't Have to Do This Alone

A lactation consultant can help you identify and resolve latch difficulties, positioning issues, low supply concerns, or any other breastfeeding challenges — often very quickly. Early support can make the difference between a difficult start and a positive breastfeeding journey.

If you're in Milton Keynes and need support, I offer home visits within 24–48 hours and video consultations for families further afield.

Ready to get support? Book a consultation here.