What is the luteal phase?
The luteal phase, also referred to as 'days past ovulation' or 'DPO', is the part of the cycle that starts at ovulation and ends the day before your next period. It usually lasts about 14 days and does not vary by more than a day in each person. Your luteal phase must be at least 10 days long to support pregnancy.
What if I don't know the length of my luteal phase?
If you are not sure about the length of your luteal phase, you can assume it is 14 days (the average length for most women).
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