Ovulation refers to the time during a woman’s menstrual cycle when eggs are released from the ovaries and enter the fallopian tubes to wait for fertilization. For women, this period is very critical because it is one of the most fertile periods for women. However, although ovulation has an important impact on a woman's fertility, many women do not know how to accurately predict this period.

1. Soreness in the waist: During this period, women may feel soreness in the waist, possibly because eggs are waiting to be fertilized in the ovaries.

2. Appetite changes: During this period, women may feel a change in appetite and want to eat some acidic or alkaline foods. This may be because the eggs are waiting for fertilization and need to adapt to an acidic or alkaline environment.

3. Increased sexual desire: During this period, women may feel an increase in sexual desire and may want to have sex.

4. Physical reactions: During this period, women's bodies may feel some different reactions, such as breasts becoming softer, headaches, fatigue, etc.

The above feelings are not necessarily accurate and may vary due to individual differences. Therefore, if you want to accurately predict your ovulation period, it is recommended that women observe their menstrual cycle, record their diet, sexual desire and physical reactions, and infer their ovulation period based on their own situation.

However, if women want to accurately predict their ovulation period, it is recommended to consult a doctor or professional health consultant, because everyone's situation is different and they can provide more accurate advice.

Overall, a woman's ovulation period is very important to a woman's fertility, but many women don't know how to accurately predict this period. Therefore, it is recommended that women observe their menstrual cycles, record their diet, sexual desire and physical reactions, and infer their ovulation period based on their own situation. If in any doubt, it is recommended to consult a doctor or professional healthcare consultant.