Phase 1: Menstruation (Days 1–5)
Uterine lining shedding occurs as progesterone and estrogen hit baseline lows, signaling the start of a new cycle.
Phase 2: Follicular Phase (Days 6–13)
FSH stimulates follicle maturation while rising estrogen thickens the endometrium and boosts mental energy.
Phase 3: Ovulatory Window (Days 14–16)
A sharp surge in Luteinizing Hormone (LH) triggers egg release from the dominant follicle into the fallopian tube.
Phase 4: Luteal Phase (Days 17–28)
The corpus luteum secretes progesterone, preparing the uterine lining for potential implantation and raising body temperature.
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