Detailed explanation of the calculation method of the female safe period. The female safe period refers to the period of time in a woman\’s menstrual cycle when it is difficult to become pregnant. This period is usually 5-7 days after menstruation and 3-4 days before ovulation. However, since every woman\’s menstrual cycle is different, it is very important to accurately calculate a woman\’s safe period. This article will focus on four aspects