Week-by-week symptoms & life
Common changes and practical points to watch through pregnancy.
Important: This content is educational and does not replace diagnosis or advice from a doctor, obstetric clinician or midwife.
What to know
Gestational age is commonly counted from the first day of the last menstrual period. Symptoms vary widely; week-by-week milestones are guides, and the maternity team may revise dating after assessment.
Medical sources
See the source list and review date on Medical sources.