Luteal Phase Calculator
Luteal Phase Length Calculator
Calculate luteal phase length from ovulation day and cycle length
days
day
Multi-Cycle Luteal Phase Average
Average luteal phase length over multiple cycles
days
days
days
Formula
Luteal Phase Length = Total Cycle Length - Ovulation Day | Follicular Phase = Ovulation Day | Normal range: 10-16 days, Optimal: 12-14 days
Frequently Asked Questions
What is the luteal phase?
The luteal phase is the second half of your menstrual cycle, starting after ovulation and ending when your next period begins. During this phase, the corpus luteum produces progesterone to prepare the uterine lining for potential implantation.
What is a luteal phase defect?
A luteal phase defect (LPD) occurs when the luteal phase is shorter than 10 days or progesterone production is insufficient. This can make it difficult for a fertilized egg to implant. Treatment options include progesterone supplementation or Clomid.
How can I lengthen my luteal phase?
Options include: progesterone supplementation (prescription), vitamin B6 (50-100mg/day), vitamin C, reducing stress, and addressing underlying conditions like thyroid disorders. Always consult your healthcare provider before starting any treatment.
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