Third trimester · Source-backed weekly guide

Pregnancy week 40

Pregnancy week 40: a source-backed guide to development, possible body changes, useful next steps, and questions for your prenatal care team.

By BabyToBloom EditorialReviewed September 20, 2026
Expectant parent relaxing in a sunlit nursery

Development

What is developing around week 40

At 39 weeks, pregnancy is considered full term by the cited federal source. The baby’s organs are preparing to function after birth while your care team monitors timing, movement, and signs of labor.

Your body

Changes you may notice

Third-trimester changes can include shortness of breath, heartburn, swelling, sleep difficulty, urinary frequency, breast changes, and contractions. Your clinician can help distinguish expected discomforts from symptoms that need evaluation.

Symptoms vary widely. Absence, presence, or intensity of a symptom cannot confirm that a pregnancy is progressing normally.

This week’s focus

A practical next step

Discuss due-date monitoring, induction options, benefits, risks, and what the plan becomes if pregnancy continues.

  • Discuss due-date monitoring, induction options, benefits, risks, and what the plan becomes if pregnancy continues.
  • Keep appointments and follow the plan created with your prenatal care professional.
  • Save new symptoms and questions in one place so changes are easier to explain.

Prenatal visit

Questions worth bringing with you

  • What should I understand or prepare during pregnancy week 40?
  • Which symptoms should make me call you now rather than wait for my next appointment?
  • What tests, vaccines, medicines, or decisions are coming next in my care plan?
Build your appointment question list →

Sources

BabyToBloom uses authoritative public-health sources and identifies the source checkpoints behind developmental statements. Individual development and clinical schedules vary.

Guidance that moves with you.

Save your due date and priorities for a personalized weekly plan without entering the same information twice.

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Pregnancy Week 40: Development, Changes & Questions | baby to bloom OS