#Pregnancy date calculator professional#

It is worked out by adding 280 days (40 weeks) to the first day of your last menstrual period. ACOG Statement on FDA Warning on Genetic Non-Invasive Prenatal Screening Tests. The pregnancy calculator gives you an approximate due date. This tool does not provide medical advice. This method calculates your due date based on the first day of your last period, assuming a typical pregnancy, on average, lasts 40 weeks (or 280 days) from the first day of your last period. Sources Reviewed by Brunilda Nazario, MD on January 18, 2017. American College of Obstetrician and Gynecologists. NOTE: Due date estimate assumes an average 28-day cycle. American College of Obstetricians and Gynecologists. Learn more about our editorial and medical review policies.ĪCOG. We believe you should always know the source of the information you're seeing. You need to know the first day of your last period to use this calculator. Pregnancy normally lasts from 37 weeks to 42 weeks from the first day of your last period.

#Pregnancy date calculator professional#

When creating and updating content, we rely on credible sources: respected health organizations, professional groups of doctors and other experts, and published studies in peer-reviewed journals. Using the due date calculator To find your due date, enter the date of the first day of your last period, and select show your due date.

Bab圜enter's editorial team is committed to providing the most helpful and trustworthy pregnancy and parenting information in the world. To find your due date, enter the date of the first day of your last period, and select show your due date.