During that Period they will experience a set of hormonal moodlets and the need to use pads or tampons to avoid staining their underwear and clothes with menstrual blood.
Sim’s first day of the cycle is defined by the first day they begin bleeding. Every cycle consists of 4 distinct segments: the Premenstrual Syndrome, the Period, the Fertile Windows (Ovulation), and the Luteal Phase. Every Sim in the game that is capable of giving birth has its own unique Menstrual Cycle.
