What happens to your body in the first 30 days after birth

The confinement month covers a period of intense physical change, and knowing what is happening makes it much easier to tell ordinary recovery from something that needs attention. This is the physiological account of the same thirty days the tradition organises around.

The month at a glance

Week	Lochia	Uterus	Other
1	Bright red, heaviest	Descending from near the navel; strong afterpains	Milk comes in around days 2 to 5; mood often peaks and dips
2	Pink to brown, lighter	Hard to feel above the pubic bone	Afterpains ease; perineal discomfort improving
3	Watery, pale	Continuing to reduce	Energy starting to return; appetite fuller
4	Cream or yellowish, minimal	Close to pre pregnancy size	Hair shedding may begin; joints still loose

The uterus

The most dramatic change is one you cannot see. Immediately after birth the uterus weighs roughly a kilogram. Over the following six weeks it contracts back to around 60 grams, close to its pre pregnancy size.

In the first days you can often feel its firm top near the navel. It descends by roughly a finger’s width a day, and by about two weeks has usually dropped below the pubic bone and become hard to feel.

That contraction is what afterpains are. Feeding triggers oxytocin, which makes the uterus squeeze, so the cramping that arrives during a feed is the shrinking process working. It is typically stronger after second and later babies.

Lochia

Bleeding after birth follows a predictable sequence, and knowing it means you can spot when something is off:

• Days 1 to 4, bright red and heaviest, sometimes with small clots
• Days 5 to 10, pink or brown, noticeably lighter
• Weeks 2 to 4, watery and pale
• Weeks 4 to 6, cream or yellowish, tapering to nothing

Bleeding that becomes heavier again, or returns to bright red after fading, is usually a sign of doing too much. It is also the tradition’s most visible feedback loop, and it is why the confinement month watches lochia so closely: the staged foods are organised around exactly this progression.

Milk

Colostrum is present from birth in small, concentrated amounts. Milk typically comes in somewhere around days 2 to 5, often with noticeable fullness and sometimes discomfort. Supply then adjusts over the following weeks according to how often and how effectively milk is removed.

This is also the period when feeding is most likely to be difficult, and pain that persists beyond the first moments of a feed usually indicates something adjustable rather than something to endure.

Hormones, joints and hair

Hormones fall sharply. Oestrogen and progesterone drop steeply within days of delivery, and that abrupt change contributes to the tearfulness and mood swings most women experience in the first week. It usually settles within a fortnight.

Joints stay loose. Relaxin, which softened ligaments to allow the pelvis to open, remains in the system for weeks after birth. Joints are therefore more mobile and easier to strain than they feel, which is why wrists, lower back and pelvis are so commonly sore in a month spent lifting and feeding a newborn. It is also the main physiological argument for not returning to strenuous exercise early.

Hair sheds. Pregnancy retains hair that would ordinarily have been shed, and that catch up shedding commonly begins between one and five months after birth. It can be alarming in volume and usually returns to normal over the following months.

The abdomen changes slowly. Some separation of the abdominal muscles is very common in late pregnancy and often narrows over the months after birth. Gentle, graded work rebuilds it; sit ups early tend not to help.

Why gentle movement matters

One thing deserves emphasis because it cuts against the strictest reading of confinement. The weeks after birth carry a raised risk of venous thromboembolism, meaning clots in the legs or lungs, and the risk is highest after a caesarean. Immobility increases it.

This is why guidance encourages walking around the house from the first days. Deep rest from work, chores and visitors is exactly right. Lying completely still for a month is not, and the two are easy to combine.

Warning signs at any stage

Contact your midwife, GP or emergency services promptly for:

• Bleeding that soaks a pad within an hour, or clots larger than a fifty cent coin
• Fever of 38 degrees Celsius or higher, or lochia that smells offensive
• Severe headache, vision changes, or sudden swelling of face and hands
• Pain, redness or swelling in one calf, chest pain or breathlessness
• A wound that becomes hot, increasingly painful or starts to discharge
• Persistent low mood, or any thought of harming yourself or your baby

None of these should wait for the end of the month.

For the same period described in the tradition’s own terms, see qi, blood, cold and wind, and for how the confinement kitchen is organised around this progression, see how the 30 days are structured.