What is calculate pregnancy week by last period?

Calculating pregnancy week by last period is a method used to estimate how far along a woman is in her pregnancy based on the date of her last menstrual period. This is often referred to as gestational age.

What are the types of calculate pregnancy week by last period?

There are two main types of calculating pregnancy week by last period: the Naegele's Rule method and the ultrasound scan method.

Naegele's Rule method
Ultrasound scan method

How to complete calculate pregnancy week by last period

To complete the calculation of pregnancy week by last period, follow these steps:

01
Determine the first day of your last menstrual period.
02
Add 7 days to that date.
03
Count back 3 months from the date obtained in step 2.
04
This estimated date is the start of your pregnancy week.
05
Confirm the estimated date with a healthcare provider for accuracy.

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