Increased leucorrhea is the ovulation period. During ovulation, a woman's vaginal discharge will increase, become darker in color, and become thinner in texture. This change usually lasts within a day until December of the next year. These changes are important characteristics of ovulation and are important for predicting a woman's pregnancy.

While changes in vaginal discharge are not the only clue, it is an important sign that can help women predict their fertile days. If women notice these changes during ovulation, they may be more likely to become pregnant.

In addition to the ovulation period, a woman's menstrual cycle also has other important characteristics, such as the length of the menstrual cycle, changes in menstrual blood volume, etc. Understanding these characteristics can help women better predict their fertile periods and take the necessary steps to protect their pregnancy plans.

To sum up, increased leucorrhea is an important feature of the ovulation period and can help women predict their fertile periods. If women notice these changes during ovulation, they may be more likely to become pregnant.