Pregnancy Week to Week.
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Third trimester

Weeks 28–40: the baby gains weight and matures for birth. Monitoring increases and the body prepares for labour and delivery.

Weeks 28–40. Choose a week for a sourced overview of typical development, common symptoms, and when to contact your provider.

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Every week from 1 to 40, with a quick-facts table.

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Informational only — not medical advice. Pregnancy Week to Week is a general educational reference. It is not a substitute for professional medical care, diagnosis, or treatment. Every pregnancy is different: always consult your doctor, midwife, or other qualified healthcare provider about your own pregnancy, and never disregard or delay professional advice because of something you read here. In an emergency, contact your maternity unit or local emergency number immediately.

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