The luteal phase meaning can be understood best by looking at where it falls within the menstrual cycle. It is the stage that occurs after ovulation and before menstruation, typically lasting about 12 to 14 days. During this time, the ruptured follicle transforms into the corpus luteum, which produces the hormone progesterone. https://lutealphase.blogspot.com/2025/08/understanding-luteal-phase-key-part-of.html