Very late ovulation means that a woman's menstrual cycle is very irregular, making it impossible to accurately predict a woman's ovulation period. For some women, this may cause some inconveniences in their lives, such as the inability to have effective birth control or difficulty predicting a woman's menstrual cycle.

First, women can monitor their basal body temperature by measuring their body temperature. Basal body temperature refers to the body temperature measured when a woman wakes up in the morning. By recording their basal body temperature, women can understand their menstrual cycle and regular body temperature changes.

Second, women can monitor their menstrual cycle by measuring their vaginal discharge. Vaginal discharge refers to the secretions in a woman’s vagina, including vaginal fluid and sperm. By measuring their own vaginal discharge, women can understand their menstrual cycle and regular discharge changes.

In addition, women can control their menstrual cycles through diet and exercise.