Menstruation occurs on the 15th. Calculated from the menstrual cycle, the ovulation period usually refers to 14 days before the next menstruation. This day is also called the "danger period" or "fertile period." However, everyone's menstrual cycle and physical condition are different, so the calculated ovulation period may also be different.

In addition to recalling symptoms, women can determine their most fertile days by using some measuring tools. For example, you can use a thermometer to measure basal body temperature, a common way to measure body temperature. During the fertile period, a woman's body temperature rises, especially in the morning.

Although the calculated fertile period may only be a rough guide, women can take better control of their reproductive health by understanding their fertile periods and take the necessary steps to protect their reproductive health. If a woman has a childbirth plan, it is best to take measures during the fertile period to ensure the healthy development of the embryo.