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Pregnancy: counting down week by week

Enter your due date on the homepage and you get a private link with a countdown dashboard: weeks to go, roughly how big your baby is, and per period what you can arrange — checkable, based on CDC and AAP guidance. After the birth you tap 🎉 Born! and the same dashboard switches to sleep, feeding, diaper size and newborn help. Free, no account — just share the link with your partner.

What you see per period

• up to 12 weeks

  🌱 Your baby grows from a pea to a plum: around 12 weeks it's about 2½ inches and half an ounce.

  • Book your first prenatal visit — usually around 8–10 weeks
  • Take a prenatal vitamin with folic acid daily — available over the counter
  • Tiredness and nausea are very common in these weeks and usually ease after week 12–16
  • Fun fact: around 6 weeks the heart is already beating, and by 12 weeks all the little organs are formed — after that it's mostly growing
  • When you share the news is entirely up to you — the '12-week rule' is a custom, not a rule

  ⓘ CDC pregnancy

• 12–20 weeks

  🌱 Around 20 weeks your baby is about 10 inches and 10 ounces — the size of a banana.

  • The anatomy (20-week) ultrasound is usually done between 18–22 weeks — your provider schedules it
  • Look into childbirth classes near you — many book up early
  • Need childcare later? Waiting lists can be long — you can get on them now
  • You'll often feel the first kicks around 18–22 weeks
  • Your baby can hear from around 18–20 weeks — so talking and singing already count
  • Staying active (walking, swimming, prenatal yoga) is good and safe — listen to your body

  ⓘ CDC pregnancy

• 20–28 weeks

  🌱 Around 28 weeks about 14½ inches and 2¼ lb — the size of a cauliflower.

  • The Tdap (whooping cough) vaccine protects your baby in the first months — recommended between 27–36 weeks, so plan it with your provider now
  • Choose and order the stroller: around 20–24 weeks is a good moment — delivery times can run to months. Second-hand is just as good
  • Start on the nursery: paint and furniture first, then the rest — no rush, and everything can air out before your baby sleeps there
  • Check your maternity/parental leave and tell your employer
  • Prenatal visits become more frequent from around 28 weeks
  • Fun fact: your baby recognizes your voices more and more, and develops a sleep-wake rhythm — you'll notice it in the kicks
  • One more trip together? Flying is generally fine until ±36 weeks — do check your airline and insurance

  ⓘ CDC pregnancy

• 28–34 weeks

  🌱 Around 34 weeks about 17¾ inches and 4½ lb — a good-sized melon.

  • The maternal RSV vaccine (Abrysvo, 32–36 weeks, typically September–January) protects your newborn against RSV — ask your provider what applies
  • Choose a pediatrician — the first well-child visit is just days after birth, so it's nice to have this settled
  • Get the rear-facing infant car seat installed and checked (NHTSA has free inspection stations) — you'll need it to leave the hospital
  • Set up a safe sleep space: firm flat mattress, no pillows, blankets or bumpers (AAP safe sleep)
  • Plan the sleep spot: for the first 6 months your baby sleeps safest in your bedroom, in their own crib (room-sharing, not bed-sharing)
  • Practice contractions (Braxton Hicks) are normal at this stage — if they become painful or regular, call your provider
  • Hiccups in your belly? Your baby is practicing breathing — completely normal and a good sign

  ⓘ CDC pregnancy & AAP

• 34–40 weeks

  🌱 At birth babies average about 20 inches and 7½ lb — a small watermelon.

  • Pack the hospital bag: documents/insurance card, clothes for you both, and the car seat ready to go
  • Discuss your birth plan and consider a hospital tour; agree who to call when things start
  • From 37 weeks your baby is full term — if labor starts earlier, just call your provider
  • Handy for later: this dashboard switches to sleep, feeding and newborn help by itself once your baby arrives
  • Filling the freezer with meals might be the best newborn-weeks preparation there is
  • Sort out in advance: the route and parking at the hospital, and who's on standby for any older children or pets

  ⓘ CDC pregnancy

• 40+ weeks · due

  🌱 Averaging about 20 inches and 7½ lb — fully ready to meet you.

  • The due date is an estimate: most babies arrive between 37 and 42 weeks — going a little 'overdue' is completely normal
  • Your provider keeps a closer eye now and will discuss options like induction around 41–42 weeks
  • Worried about anything (less movement, waters breaking)? Always call your provider

  ⓘ CDC pregnancy