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Home > Wellness > Health Library > Interactive Tool: When Are You Most Fertile?
here to find out when you are most likely to get pregnant.
This interactive tool estimates your peak
fertility period, also known as your "fertile window." This is when you are
most likely to get pregnant. Do not use this tool to prevent pregnancy.
To find your peak fertility period, the tool first calculates the day you
are most likely to
ovulate. This is the day an ovary releases an egg. In
the tool, you will enter the typical length of your menstrual cycle, and you
will click on the first day of your last menstrual period.
This calculator is meant to give you a rough estimate.
Women usually ovulate at day 15, but it's also normal to ovulate well before or
after the 15-day mark.
For information about reading your body's
signs to tell when you will ovulate, see
Health Tools help you make wise health decisions or take action to improve your health.
Your "fertile window"
is up to 6 days long, once a month. It includes:
If you want to become pregnant, try to have sex every day or every other day from your first fertile day to your last fertile day.
If your periods are irregular, this
calculator is not a good way to predict your ovulation dates. Do not use this
tool to prevent pregnancy.
For more information, see the topics
Fertility Problems. If you are looking for information
on birth control, see the topic
Source: Fritz MA, Speroff L (2011). Clinical Gynecologic Endocrinology and Infertility, 8th ed., Philadelphia: Lippincott Williams and Wilkins.
Other Works Consulted
Fritz MA, Speroff L (2011). Clinical Gynecologic Endocrinology and Infertility, 8th ed., Philadelphia: Lippincott Williams and Wilkins.
October 29, 2012
Adam Husney, MD - Family Medicine & Kirtly Jones, MD - Obstetrics and Gynecology
How this information was developed to help you make better health decisions.
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