Welcoming the fourth trimester
A midwife's guide to the first twelve weeks — what's happening to your body, why your feelings are big, and the small kindnesses that help most.
Founding midwife · 8 min read · 12 May 2026
The fourth trimester is the name we give to the first twelve weeks after birth. It is the most overlooked, undersold and important season of becoming a mother. The baby has arrived, the visitors have come and gone, the casseroles are running out — and you, who has just done the most physically and emotionally enormous thing a body can do, are expected to slip back into life like the world hasn't tilted on its axis.
It has tilted. Don't pretend otherwise. Here is what we want you to know.
Your body is doing real, hard work — even when it looks still
In the first six weeks your uterus shrinks from melon-sized back to the size of a small pear. Hormones drop sharply over a matter of days. Your milk supply finds its rhythm. Stitches, if you have them, dissolve and pull. Your blood volume returns to its pre-pregnancy state. None of this is small.
Treat the first ten days like recovery from major surgery, because that is exactly what your body is doing. Stay in bed as much as you can. Have your meals brought to you. Wear loose, soft clothes. Sleep when the baby sleeps — yes, the cliché is a cliché because it works.
Your feelings are bigger because they should be
Around day three or four, many moms find themselves crying for no reason. Then crying for every reason. This is the baby blues — a hormonal wave that usually passes within two weeks. It's normal. It is not the same as postnatal depression.
If sadness, anxiety, intrusive thoughts or numbness last beyond two weeks — or if at any point you don't feel like yourself, can't sleep when the baby sleeps, or feel disconnected from your baby — please call us. Postnatal depression is common, treatable, and deserves the same kindness we'd give a fever.
Feeding is a learned skill, not an instinct
If breastfeeding is what you'd like, the first two weeks are when most of the mechanics get sorted out. Latch, supply, posture, nipple care — these are practical things, not character tests. A lactation consultant or midwife visit in the first week is one of the best investments in the whole journey.
If you bottle-feed — for any reason, or no reason at all — your baby will be just as loved, fed and well. The "best" feeding method is the one that keeps both of you fed, sleeping, and connected.
Visitors, partner, the world
You are allowed to say no. To anyone. For any reason. This includes your mother-in-law, your best friend, and the neighbour who "just wants a peek". You can ask people to come for ten minutes, to bring food and not stay, to wash a few dishes, or to come back next month.
Your partner, if you have one, has just become a parent too. They are tired, they are figuring it out, and they want to help. Tell them what you need — even if what you need is "I don't know what I need, can you sit with me". They cannot read your mind, but they often want to.
Small kindnesses that help most
- A meal in the freezer for week three, when the casseroles run out
- One person who can hold the baby while you shower without asking what to do
- A trusted friend who lets you cry on the phone without trying to fix it
- An hour outside, every day, with the baby in a sling or pram
- Permission to ignore your inbox
- A handful of professionals you trust — a midwife, a lactation consultant, a postnatal physio
When to call us
Heavy bleeding (soaking a pad in under an hour), fever, a hot painful breast, a tear that's getting redder rather than calmer, baby not feeding well, or a heaviness in your mood that worries you. Anything, really. We'd rather hear from you about something small than miss something important.
You are doing the work of a generation in the gap between night feeds. Be slow. Be soft with yourself. We're here.
— S.M.