Home > Interactive Tool: When Are You Most Fertile?
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.
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.
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
Other Works Consulted
Fritz MA, Speroff L (2011). Clinical Gynecologic Endocrinology and Infertility, 8th ed., Philadelphia: Lippincott Williams and Wilkins.
ByHealthwise StaffPrimary Medical ReviewerAdam Husney, MD - Family MedicineSpecialist Medical ReviewerKirtly Jones, MD - Obstetrics and Gynecology
Current as ofMarch 16, 2017
Current as of:
March 16, 2017
Adam Husney, MD - Family Medicine & Kirtly Jones, MD - Obstetrics and Gynecology
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