When Is the Luteal Phase?
The luteal phase is the second half of your menstrual cycle. It starts the day after ovulation and ends the day before your next period.
Typical timing
In a 28-day cycle, ovulation happens around day 14, making the luteal phase days 15–28.
The luteal phase length is relatively fixed (10–16 days). Variability in total cycle length usually comes from the follicular phase, not the luteal.
What happens during the luteal phase
Progesterone rises, body temperature climbs slightly, and the uterine lining thickens. If pregnancy doesn't occur, progesterone drops and menstruation begins.
Common signs
Slight temperature rise, breast tenderness, mood shifts, bloating, food cravings, and PMS symptoms in the days before your period.
When a short luteal phase matters
A luteal phase under 10 days (luteal phase defect) can affect implantation. If you're trying to conceive and tracking shows a consistently short luteal phase, talk with a fertility-aware clinician.