Shows safe period, fertile window, and menstrual period.

• Safe Period: This is the time outside of ovulation, when the chances of getting pregnant are very low. It typically includes the days before and during menstruation, and some days after menstruation, but this can vary. 
• Fertile Period: This period is centered around ovulation, when an egg is released from the ovary and travels down the fallopian tube, making it available for fertilization. The fertile window is typically considered to be about 5 days before ovulation, the day of ovulation, and the day after. 
• Menstrual Period: This is the time when the uterine lining sheds due to the lack of fertilization. It’s also referred to as a woman’s period or menstrual flow.