| | Family Health | Family Planning
How to Calculate Birthdates
Things You'll Need
- First day of the mother's last menstrual period
- Calendar
- Pencil or sticker
Instructions
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1
Determine the beginning of your last menstrual period. Write down the date or mark it on a calendar. This is the most crucial component of the task.
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2
Use a calendar to count exactly 40 weeks from the first day of your last period.
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3
Mark your calendar with a pencil or sticker to record the baby's expected due date. Using a pencil or sticker will enable you to correct the date if a doctor gives you a revised due date.
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