Pregnancy Calculator: How Far Along Are You?

To calculate how far along you are, count the number of weeks from the first day of your last menstrual period to the present date. In your case, the first day of your last menstrual period was on May 24. Assuming today is January 18, you can count the number of weeks as follows:

May has 31 days.

June has 30 days.

July has 31 days.

August has 31 days.

September has 30 days.

October has 31 days.

November has 30 days.

December has 31 days.

January (up to the 18th) has 18 days.

In total, there are 156 days between May 24 and January 18. To convert days to weeks, divide by 7:

156 days / 7 days/week = 22.29 weeks.

Therefore, you are approximately 22 weeks and 3 days pregnant, give or take a few days.