The first six weeks after birth are mostly about healing, but most of the first year's other changes arrive after your six-week checkup. Hair shedding, returning periods, thyroid swings and late-starting depression usually show up between months two and twelve, and so do some serious complications.
Maybe you got the all-clear at your checkup. Now it's month four, there's hair in the drain, and you're more tired than you were at month one. That's the shape of the year, and most of it is normal. A few things on this timeline are worth a phone call, even when they feel like ordinary new-baby exhaustion.
Your First Year After Baby at a Glance
Timings vary from woman to woman. This is the usual window for each change.
| Stage | What's common | What to get checked |
|---|---|---|
| Weeks 1 to 6 | Bleeding that fades, healing stitches or incision, baby blues | Headache, vision changes, heavy bleeding, a swollen painful leg |
| Weeks 7 to 12 | First period if you're not fully breastfeeding, a gap in your stomach muscles | A racing heart, anxiety or insomnia that feel out of proportion |
| Months 4 to 6 | Hair shedding at its peak, stomach muscles still drawing together | Breathlessness, swollen legs, a hairline thinning under tight styles |
| Months 7 to 9 | Sleep still broken, energy uneven | Tiredness, low mood, dry skin or constipation that keep building |
| Months 10 to 12 | Hair close to normal fullness | Hair still thin after a year, any low mood that hasn't lifted |
What Happens to Your Body in the First Six Weeks?
Bleeding is the main event. Mayo Clinic says the discharge changes color and lessens over 4 to 6 weeks, going from bright red to darker, then yellow or white. Mayo Clinic also suggests a check-in by phone or in person within 2 to 3 weeks, then a complete exam between 6 and 12 weeks.
High blood pressure can still appear after you're home. Mayo Clinic says most postpartum preeclampsia starts within 48 hours, but it sometimes develops up to six weeks or later after birth. Severe headaches, blurred vision, pain under your right ribs, nausea or vomiting, and shortness of breath all need medical care right away.
Mood needs watching in these weeks too. Mayo Clinic says postpartum psychosis is rare, usually starts within the first week and needs immediate treatment. Confusion, hallucinations or paranoia in the first weeks need emergency care.
Stitches, C-section healing and normal bleeding are in how long postpartum recovery takes, so this timeline moves on.
Why the Six-Week Checkup Isn't the Finish Line
Serious problems don't stop at six weeks. CDC data on pregnancy-related deaths in 36 states from 2017 to 2019 found that 30% happened between six weeks and a year after birth. Another 23% happened between one and six weeks.
Review committees judged about 84% of those deaths preventable. Mental health conditions were the leading cause overall. For Black women, the leading cause was heart conditions.
That's why the CDC's list of urgent maternal warning signs covers the whole year after delivery, not just the first weeks. The full list is further down.
Weeks 7 to 12: Periods, Contraception and Your Stomach
If you're bottle feeding or combination feeding, the UK's NHS says your first period could start as soon as 5 to 6 weeks after birth. If you're fully breastfeeding, including at night, it may not come back until you feed less.
A missing period doesn't mean you can't get pregnant. The NHS says you can get pregnant again from 3 weeks after birth, even while breastfeeding.
Sort out birth control before you have sex again. The NHS advises starting it within 21 days of birth if you don't want to get pregnant. Your 2-to-3-week check-in is a good time to ask.
The gap between your stomach muscles is called diastasis recti. Cleveland Clinic says it affects 6 in 10 women after childbirth, and one study found 45% still had it at six months. It suggests seeing a provider if the gap is wider than two fingers or it hurts.
Cleveland Clinic suggests skipping crunches, sit-ups, double leg lifts and unmodified planks while the gap closes. A physical therapist experienced with diastasis recti can show you what to do instead.
Months 4 to 6: When Does Postpartum Hair Loss Peak?
Around month four. The American Academy of Dermatology (AAD) says shedding usually peaks about four months after giving birth.
If you wear braids, locs, a tight bun or extensions, watch your hairline during these months. The AAD lists broken hairs around your forehead and a receding hairline as early signs of traction alopecia. Unlike postpartum shedding, it can become permanent if it goes on untreated. Loosening braids at the edges and switching styles more often both help.
Hair falling out after pregnancy goes through shedding versus something else, plus iron and vitamins.
Thyroid swings can overlap this stretch. The American Thyroid Association says postpartum thyroiditis occurs in approximately 5 to 10% of women in the US. An overactive phase can start 1 to 4 months after birth and last 1 to 3 months, with anxiety, insomnia, palpitations and irritability.
The underactive phase usually comes at 4 to 8 months. It's the one more women see a doctor about. A blood test can tell the difference between thyroid trouble and the ordinary wear of a new baby.
One rare problem looks a lot like new-parent tiredness. Peripartum cardiomyopathy is a weakened heart muscle. The NIH's heart institute says it develops late in pregnancy or within 5 months after birth.
Its signs are shortness of breath, extreme tiredness and fluid in your legs. Women over 35, very young mothers, and Black or American Indian and Alaska Native women have a higher risk. Breathlessness or swollen ankles at month three deserve a call, not a wait.
