Call or text 24/7 240-779-1585 to schedule an appointment
For Non-Patient Services call 301-770-4444 M-Th 9am-4pm

What is Gestational Age and How is It Determined?

Gestational age is the common term used during pregnancy to describe how far along the pregnancy is.

It is measured in weeks, from the first day of the woman’s last menstrual cycle to the current date. A normal pregnancy can range from 38 to 42 weeks.

Why is the Mentrual Cycle Not a Good Indicator of Gestational Age

Truth be told, many women are not positive of the date of their last menstrual cycle, and therefore this isn’t a good indicator of the gestational age of the fetus.


The most accurate method in determining gestational age is through a sonogram.  During the sonogram, the nurse will measure the size of the gestational sac and fetus.  This will determine the gestational age of the fetus.  The nurse will also be able to detect if the fetus is viable.

Why is Gestational Age Important If You’re Considering an Abortion?

If you are considering an abortion, you need these facts.

If the pregnancy isn’t viable, you do not need to go to the expense of the medical procedure if it isn’t necessary.

And, the exact age of the fetus is critical to know to determine what type of abortion you are eligible to have.


All of Rockville Women’s Center pregnancy services are completely free.

We are a non-profit organization. We’ve intentionally structured our organization so we don’t make money on any pregnancy decision that you make.

That means we can provide unbiased information without a financial conflict of interest. And we’ll do it in a caring, non-judgmental way.

We only want to help you make the best decision for you!

Make an appointment