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Pregnancy illustration for week 23 — baby Lungs gearing up

Second Trimester · Week 23

23 Weeks Pregnant: Lungs gearing up

Baby development

Your baby at 23 weeks

Your baby's body is getting better and better at the work that will matter after birth — little by little, the lungs are preparing for the day they'll take that first breath. This is often described as a milestone week because so many important systems are maturing.

Your body this week

What you might be feeling at 23 weeks

Approaching viability is both reassuring and heavy. Your baby is getting stronger every day. You might notice Braxton Hicks contractions, swelling in your feet, and difficulty sleeping comfortably. A pregnancy pillow can be a lifesaver.

Shelbi Kohler, certified birth doula

From Shelbi

Shelbi Kohler · mother of seven · certified birth doula

This is the week where a lot of moms start thinking about the endgame. You're approaching viability — the point where your baby could potentially survive outside the womb with medical support. That thought is both reassuring and terrifying. I remember with my first, someone told me about viability at this stage and I burst into tears in the middle of a grocery store. It's a heavy milestone. But it's also a beautiful one: your baby is getting stronger every single day, and the odds of a healthy, full-term delivery are overwhelmingly in your favor.

For you

This week is about getting through it

Scroll up to revisit your baby's development and Shelbi's encouragement for week 23. When you're ready, share this week with your partner.

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Common questions

23 weeks pregnant: your questions answered

What should I expect at 23 weeks pregnant? +

Approaching viability is both reassuring and heavy. Your baby is getting stronger every day. You might notice Braxton Hicks contractions, swelling in ...

Is my baby moving normally at 23 weeks? +

Movement patterns vary. If you notice a significant decrease in movement, contact your provider. When in doubt, always call.

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