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Day 168 of 280 · 24 weeks

Viable

Last reviewed · 3 min read · 6 sources · Plain-text version

Twenty-four weeks. The NHS calls your baby viable now. What that word means, the signs of early labor, and one question to ask about newborn care.

Size this week
about the size of a corn on the cob
Length this week
around 30 cm from head to heel
A white woman with red hair in a loose denim shirt over a 24-week bump, sitting at a clinic desk across from a midwife, both smiling, a notepad on her knee, bright daylight.

Twenty-four weeks. There's a word for this week, and it's worth knowing what it means and what it doesn't. Then one question, and back to ordinary life.

Your baby

A single husked corn on the cob on a plain white linen cloth, soft daylight.

Your baby is around 30cm long from head to heel, about the size of a corn on the cob. Everything is in proportion, just smaller than a baby who's been in the womb longer (NHS).

The NHS calls a baby at this stage "viable": a baby born now could survive with support, and neonatal units can help premature babies breathe, feed, keep warm and fight infections (NHS). Viable means possible with a lot of help. The place your baby is best off is exactly where it is.

Your body

You may feel very hungry this week, but the NHS says you don't need extra food until week 28 (NHS).

The other thing worth knowing now is what early labor feels like, because preterm labor is labor between 20 and 36 weeks (NICHD). The NICHD's list: contractions every 10 minutes or more often; a change in vaginal discharge, such as leaking fluid or bleeding; pressure in the pelvis; a low, dull backache; cramps like a period; and belly cramps, with or without diarrhea (NICHD). If you think it might be happening, call your doctor or go to the hospital to be checked (NICHD).

Try today

  1. The neonatal-unit question

    Time: 5 minutes, at your next visit or on the phone

    1. Ask your midwife or provider what level of newborn care the unit where you plan to give birth has. The NHS describes what these units do: help with breathing, feeding, warmth and infections (NHS).

    2. Ask where babies go if they need more care than that unit gives, and how a parent gets there.

    3. Write both answers on one line in your pregnancy notes.

    4. Close the notes. That's the whole task.

    Make it work:

    If you have a history of preterm birth, say so at this visit; the CDC asks you to tell your doctor (CDC).

Watch for

  • Normal

    the bump tightening now and then. Braxton Hicks contractions can start after the first trimester; they're usually short, painless and irregular (MedlinePlus).

    Call your provider

    or go to the hospital for six or more contractions in an hour; some through the day are normal, six or more in one hour are not (NICHD).

  • Normal

    aches around your back, ribs and bottom, which the NHS calls common at 24 weeks (NHS).

    Call your provider

    for a low, dull backache with pelvic pressure or period-like cramps (NICHD).

  • Normal

    a white, milky discharge, which the NHS lists among symptoms that carry on (NHS).

    Call your provider

    for vaginal bleeding or fluid leaking (CDC).

For you

Plainly, once: about 1 in 10 US babies were born preterm in 2022, and babies born before 32 weeks have higher rates of death and disability (CDC). That's why the signs above are worth knowing, and why the CDC's instruction for possible preterm labor is to see a provider right away (CDC). The things that lower the risk are ones you may already be doing: no smoking, alcohol or drugs, and prenatal care early and all the way through (CDC).

Then put it down. You've read it once; you don't have to carry it.

If you're the partner: learn the list above well enough to say "let's call" without debate. A call that turns out to be nothing costs an hour.

Sources

This guide is general education that summarizes published research and guidance from groups like the American Academy of Pediatrics, the CDC, and the WHO. It isn’t medical advice, and every child develops on their own timeline. Your pediatrician knows your child; if something feels wrong, call them. In an emergency, call 911.

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