A calm, sourced guide to all 40 weeks — typical baby development, common symptoms, and when to call your provider. Informational only; always consult your healthcare provider.
Pregnancy Week to Week is a free, sourced, week-by-week guide to pregnancy — what is typically happening with your baby and the changes you may notice, from week 1 to week 40. Every page is informational only and cites reputable medical authorities. It is not a substitute for advice from your own doctor or midwife.
A quick, in-browser estimate from your last period — then jump straight to that week. An estimate only; your provider confirms your dating.
Open the due-date calculator →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.
Occasional, useful, no spam.