1. What is the EDD Due Calculator?

The EDD (Estimated Due Date) calculator estimates the expected delivery date based on the last menstrual period (LMP). It uses the standard calculation of LMP plus 280 days, which corresponds to 40 weeks of pregnancy.

2. How Does the Calculator Work?

The calculator uses the standard pregnancy calculation formula:

Where:

• \( EDD \) — Estimated Due Date
• \( LMP \) — Last Menstrual Period
• \( 280 \text{ days} \) — Standard pregnancy duration (40 weeks)

Explanation: This calculation is based on Naegele's rule, which assumes a 28-day menstrual cycle and ovulation occurring on day 14.

3. Importance of Due Date Calculation

Details: Accurate due date calculation is crucial for prenatal care planning, monitoring fetal development, scheduling important tests, and preparing for delivery.

4. Using the Calculator

Tips: Enter the first day of your last menstrual period in the date field. The calculator will automatically compute your estimated due date.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this due date calculation?
A: This method is accurate for women with regular 28-day cycles. Only about 5% of babies are born exactly on their due date.

Q2: What if my menstrual cycle is longer or shorter than 28 days?
A: For cycles longer than 28 days, add the extra days to the due date. For shorter cycles, subtract the difference.

Q3: Can the due date change during pregnancy?
A: Yes, healthcare providers may adjust the due date based on ultrasound measurements, especially if there's a significant discrepancy.

Q4: What is considered full-term pregnancy?
A: Full-term is between 39 weeks 0 days and 40 weeks 6 days. Early term is 37-38 weeks, late term is 41-41 weeks 6 days.

Q5: When should I contact my healthcare provider?
A: Contact your provider as soon as you suspect pregnancy to begin prenatal care and confirm your due date.