Question 1

Is this a medical diagnosis?

Accepted Answer

No. This is a planning estimate. Due dates are approximations, and only about 5% of babies arrive on the exact predicted date. Consult your healthcare provider for medical guidance.

Question 2

Which method is most accurate?

Accepted Answer

First-trimester ultrasound dating is generally the most accurate. The LMP method is the standard starting point but can be off if cycles are irregular or the exact LMP date is uncertain.

Question 3

Can my due date change?

Accepted Answer

Yes. Your healthcare provider may adjust your due date based on ultrasound measurements, especially if there is a significant difference from the LMP-based estimate.

Question 4

What is the IVF transfer method?

Accepted Answer

For IVF pregnancies, the due date is calculated from the known transfer date minus the embryo age at transfer. A day-5 blastocyst transfer adds 261 days, and a day-3 embryo transfer adds 263 days. This is the most precise method because both dates are medically documented.

Question 5

What is Naegele's rule?

Accepted Answer

Naegele's rule estimates the due date by adding 280 days (40 weeks) to the first day of your last menstrual period. It assumes a 28-day cycle with ovulation on day 14. Your provider may adjust for longer or shorter cycles. This calculator is for planning purposes only and is not a substitute for medical advice.

Question 6

How are pregnancy trimesters divided?

Accepted Answer

The first trimester spans weeks 1 to 12, the second trimester covers weeks 13 to 27, and the third trimester runs from week 28 to 40. Each phase has distinct developmental milestones. Consult your healthcare provider for personalized prenatal care guidance.

Calculadora de Data Prevista de Parto

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Calculadora de Data Prevista de Parto - DPP a partir da DUM ou FIV

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