Luteal Phase

 The luteal phase is the final stage of the menstrual cycle, occurring after ovulation and before the start of menstruation. It typically lasts between 10 to 16 days, with 14 days being the average. During this time, the ruptured follicle transforms into the corpus luteum, which begins producing progesterone — the hormone responsible for preparing the uterine lining for potential pregnancy. Understanding the luteal phase is critical for those trying to conceive, tracking hormonal health, or managing menstrual-related symptoms. Hormonal Changes During the Luteal Phase The luteal phase is dominated by a rise in progesterone, while estrogen levels slightly decline and then experience a mild second surge. Progesterone plays a vital role in maintaining the thickened uterine lining, which is necessary for the implantation of a fertilized egg. If implantation does not occur, progesterone levels drop, triggering the shedding of the uterine lining — also known as menstruation. These hor...