What does "safe period" mean?

The safe period refers to a time frame within a woman's menstrual cycle when pregnancy is less likely. Specifically, it includes the days from the last day of ovulation until the day before the next menstrual period begins, as well as a few days before and after menstruation. During this time, the chances of becoming pregnant are relatively low because no eggs are being released or the released eggs are no longer capable of being fertilized, even without contraceptive measures during intercourse. However, the safe period is not absolutely safe, as a woman's ovulation can be influenced by multiple factors such as emotions, environment, and health conditions. These factors may cause ovulation to occur earlier or later than expected, or even result in additional ovulation. There are several methods for calculating the safe period, including calendar calculation, basal body temperature tracking, and cervical mucus observation. However, each method has certain inaccuracies and uncertainties. Therefore, even during the safe period, appropriate contraceptive measures should be taken to prevent unintended pregnancy.