Gestational age, trimester and due date
POST /pregnancy/gestational-age · API key required
From the last menstrual period, a due date, or weeks (and days) as at a reference date (default today, UTC). Returns weeks and days, trimester, due date and chapter-anchored milestones (protein phase, GDM screening window 24-28 weeks, preeclampsia criteria after 20 weeks). The chapter gives no dating rules: 280 days from the LMP, and trimesters at under 14, 14 to under 28, and 28 weeks or more, are conventions and are stated as such.
Request body
Content type: application/json
Responses
200- Result with steps, warnings and sources400- Invalid input401- Missing or invalid API key429- Rate limited