# How to figure out due date from conception

Women who undergo special procedures, such as artificial insemination or in vitro fertilization, typically know the exact date of conception. Calculating Estimated Due Date Based on the last menstrual period, the estimated due date is 40 weeks from the first day of the period.

If you know when you conceived, our pregnancy calculator calculates your due date by adding 38 weeks to the date of conception. This method of calculation may.

**BEST Way to Calculate Your Pregnancy Due Date**

How to calculate due date: First day of last period. As we now know, the most commonly used method is to count “40 weeks from the first day of your LMP," Dr.

Our easy-to-use pregnancy calculator is the number one most popular way to calculate your due date based on the date of your last menstrual period. Jul 13, · How to calculate due date: Ultrasound scan An ultrasound scan will then be used to check that the estimated due date is accurate, which is especially important if your period doesn’t always arrive at the same time each month.

Conception usually occurs around days after the first day of the last period of a woman who has a regular period. The estimation of conception date is. Jan 05, · Naegele’s rule. Naegele’s rule involves a simple calculation: Add seven days to the first day of your LMP and then subtract three months. For example, if your LMP was November 1, Add.

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