The menstrual cycle is a highly complex, hormone-driven process that prepares the female body for potential pregnancy every month. While the global average length is designated as 28 days, cycles ranging anywhere from 21 to 35 days are considered completely healthy and medically normal in adults.
The Four Primary Phases
- Menstruation (Days 1-5): The elimination of the thickened uterine lining (endometrium) from the body through the vagina.
- The Follicular Phase (Days 1-13): The pituitary gland releases Follicle Stimulating Hormone (FSH), prompting the ovaries to prepare an egg.
- Ovulation (Day 14): The release of a mature egg from the surface of the ovary. This is the peak window for conception.
- The Luteal Phase (Days 15-28): The body releases progesterone to keep the uterine lining thick. If pregnancy does not occur, hormone levels drop, triggering menstruation.
Clinical Tracking
Tracking your baseline cycle empowers you with clinical understanding, allowing you to quickly identify delayed periods or irregularities that warrant medical evaluation.