1. What Is Net Preg Calc?

Net Preg Calc is a pregnancy calculator that estimates the due date based on the last menstrual period (LMP) using the standard Naegele's rule, adding 280 days to determine the estimated delivery date.

2. How Does The Calculator Work?

The calculator uses the standard pregnancy calculation formula:

Where:

• \( LMP \) — First day of last menstrual period
• \( 280 days \) — Standard duration of human pregnancy (40 weeks)

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

3. Importance Of Pregnancy Dating

Details: Accurate pregnancy dating is crucial for monitoring fetal development, scheduling prenatal tests, determining gestational age, and planning for delivery.

4. Using The Calculator

Tips: Enter the first day of your last menstrual period in the date field. The calculator will provide your estimated due date and current gestational age.

5. Frequently Asked Questions (FAQ)

Q1: How Accurate Is This Calculation?
A: The calculation provides an estimate. Only about 5% of babies are born exactly on their due date, with most deliveries occurring within two weeks before or after.

Q2: What If My Cycle Is Not 28 Days?
A: For women with longer or shorter cycles, the calculation can be adjusted by adding or subtracting days accordingly from the standard 280-day calculation.

Q3: When Should I Confirm With Ultrasound?
A: Early ultrasound (8-12 weeks) provides the most accurate dating and is recommended to confirm the estimated due date.

Q4: What Are The Pregnancy Trimesters?
A: First trimester: weeks 1-13, Second trimester: weeks 14-27, Third trimester: weeks 28-40+.

Q5: Can The Due Date Change?
A: Yes, healthcare providers may adjust the due date based on ultrasound measurements, especially if there's a significant difference from LMP-based calculation.