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29 Weeks Pregnant: Baby Size, Symptoms and What to Do

Week 29 is in the third trimester, month 7 of pregnancy. Here's how big your baby is, what's developing, what you may feel and what to do this week.

Week 29 · 3rd trimester · month 7
About the size of a head of cabbage
about 15.4 in (39 cm) · 3 lb (1,350 g) (head to heel)

Your baby this week

Your baby is fully formed and now focused on growing and maturing. Lanugo and vernix gradually start to fade.

At 29 weeks your baby's muscles and lungs keep maturing, and the bones need plenty of calcium, so make sure you're getting enough from dairy or other sources. Your baby's head is more in proportion, and responses to light, sound and touch are getting stronger. For you, constipation and hemorrhoids are common: fiber-rich foods, plenty of fluids and regular walks can help. Varicose veins in the legs may appear because of increased blood volume and pressure from your uterus; putting your feet up and compression stockings can ease them. Swelling in one calf that's painful, warm or red can be a blood clot and needs urgent care.

By the numbers

Week 29 covers days 203 to 209 counted from the first day of your last period, which is 73% of a 40-week pregnancy. About 77 days remain until a 40-week due date. Since last week, an average baby gains about 5.6 oz (160 g). By date of conception, your baby is about 27 weeks old.

Pregnancy is dated from the first day of your last period, so conception happens around week 2. Your due date is 280 days (40 weeks) from that day, and an early ultrasound may adjust it.

Your body

You'll likely notice when your baby tends to be most active. If movements ever seem less than usual, call labor and delivery right away rather than waiting it out.

Tests and to-dos this week

Choose a pediatrician if you haven't yet, so the hospital knows who will see your baby after birth. Start shopping for a rear-facing infant car seat; you'll need it for the ride home.

  • Tdap (whooping cough) vaccine · weeks 27–36 · vaccine

    Recommended during each pregnancy, preferably early in this window.

Coming up: RSV vaccine (September–January) (from week 32). Full prenatal visit schedule

Tips for the third trimester

  • From 28 weeks, go to sleep on your side; if you wake on your back, just roll over.
  • Pack your hospital bag and agree with your provider on when to head in.
  • Call right away, even at night, if your baby moves less or differently.
  • Know the signs of labor: regular, strengthening contractions, your water breaking or a bloody show.

Call your provider or labor and delivery right away if you have:

  • your baby is moving less or differently than usual
  • your water breaks, especially if the fluid is green, brown or smells bad
  • bright red bleeding or constant, severe belly pain
  • a severe headache, vision changes, pain under the ribs or sudden swelling
  • intense itching, especially on the palms and soles

In an emergency, call 911.

Last week and next week

Last week (28): Third trimester, here you go.

Next week (30): Your baby's eyes can now focus.

Frequently asked questions

How big is the baby at 29 weeks?

About the size of a head of cabbage: about 15.4 in (39 cm) · 3 lb (1,350 g), measured head to heel. These are rounded averages, and every baby grows at their own pace.

How many months is 29 weeks pregnant?

29 weeks is in month 7 and the third trimester. About 11 weeks (77 days) remain until a 40-week due date. Months are approximate; providers count weeks and days.

When is leg pain in pregnancy a concern?

Night cramps and tired, slightly swollen legs by evening are common. A painful, warm or red calf on one side can mean a blood clot and needs urgent care.

What's the next test or appointment after week 29?

Next up: RSV vaccine (September–January), from week 32. Your provider may schedule things differently depending on your health and local practice.

Sources

Last reviewed: November 14, 2026 · Kitpebble editorial team

This page is for general information. It isn't medical advice or a diagnosis and doesn't replace your OB-GYN or midwife. Sizes are rounded averages. Our editorial policy

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