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Third trimester

34 weeks pregnant

At 34 weeks, your baby's lungs are almost ready and you might feel them drop lower — six weeks to go, give or take.

Last updated September 23, 2026 · Written and reviewed by the babybumpkit editorial team.

About the size of
a cantaloupe
~45 cm · ~2.1 kg

How big is my baby at 34 weeks?

At 34 weeks, your baby is roughly 45 cm long and weighs about 2.1 to 2.2 kg (around 4.7 lb) — about the size of a cantaloupe. Most of the length growth is done now; the remaining weeks are mostly about packing on weight, roughly half a pound a week.

The skin is smoothing out as fat builds underneath it, and the fine downy hair (lanugo) that covered your baby earlier is mostly gone. Fingernails now usually reach the fingertips.

Lung development is a major milestone this week. Surfactant, the substance that keeps tiny air sacs from collapsing, is being produced in steadily increasing amounts, which is a big part of why babies born from 34 weeks on tend to do well with breathing support if they need it.

What symptoms are normal at 34 weeks pregnant?

Most people feel a mix of pelvic pressure, Braxton Hicks contractions, heartburn, and trouble sleeping at 34 weeks — all common and expected in late pregnancy. If your baby has started moving lower into your pelvis, you may also notice you can breathe a little easier as pressure eases off your diaphragm.

Swelling in your feet and ankles, needing to urinate more often, and lower back or hip discomfort as ligaments loosen are all typical too. Varicose veins and stretch marks may become more noticeable as your bump reaches its fullest.

Braxton Hicks — irregular, non-painful tightening of the uterus — often pick up in frequency now. They usually ease with a change of position or a glass of water; contractions that keep coming at regular, shortening intervals are different and worth a call (more on that below).

Is it normal for baby to drop at 34 weeks?

It can be — some babies begin settling lower into the pelvis (called lightening or 'dropping') in the weeks before labor, and 34 weeks is within the normal range for that to start, especially in a first pregnancy. Plenty of babies don't drop until much closer to labor, or not until labor itself, and that's normal too.

You might notice your bump sits lower, breathing feels a bit easier, but you're making more frequent trips to the bathroom as there's now more pressure on your bladder. A new waddling walk or increased pelvic pressure is common alongside it.

Dropping on its own isn't a sign labor is imminent — it can happen weeks before anything starts. Your provider can feel baby's position and station at your next visit if you're curious.

What should I be doing at 34 weeks pregnant?

This is a good week to make sure your hospital bag is packed and your car seat is installed, since babies born from here on generally do well even if they arrive earlier than planned. If you haven't already, ask your provider about the timing of your Group B strep (GBS) swab test, usually done between 36 and 37 weeks.

Review the signs of labor with whoever will be with you at the birth, and confirm your route and backup plan for getting to the hospital or birth center. Appointments often shift to every two weeks around now, so use this visit to ask any questions building up.

It's also worth finalizing practical newborn logistics — pediatrician choice, infant car seat check, and who's on call for other children or pets — while you still have some spare energy.

When should I call my doctor at 34 weeks?

Call the same day for a noticeable, sustained drop in your baby's movement, any vaginal bleeding, fluid leaking that could mean your waters have broken, or regular contractions before 37 weeks, since these can signal preterm labor and need evaluation. Severe or persistent headaches with vision changes, sudden swelling in your face or hands, or intense abdominal pain also warrant an urgent call.

A fever, painful urination, or a sudden increase in Braxton Hicks that starts feeling rhythmic and doesn't ease with rest are also worth mentioning to your provider promptly. When in doubt, calling costs nothing — your midwife or doctor would rather hear from you and rule things out.

Frequently asked questions

Yes — babies born at 34 weeks are considered late preterm and generally do well, with survival rates very high. Many still need a NICU stay, often for help with feeding, temperature regulation, or occasional breathing support, but major complications are far less common than at earlier preterm stages.

Sources and medical references