Ovulation refers to the few days when a woman's egg is released from the ovary and waits in the fallopian tube for fertilization. During this period, a woman's body undergoes a series of changes that often affect fertility. Therefore, knowing your ovulation period is important when planning a pregnancy.

1. Observe symptoms: Some women may experience symptoms during ovulation, such as abdominal discomfort, breast distension, headache, nausea, etc. These symptoms usually disappear within a few hours but may last for several days.

2. Measure body temperature: Women can measure their body temperature when they wake up every morning to record changes in body temperature. Generally speaking, a woman's body temperature will rise by 0.3-0.5 degrees Celsius during ovulation.

3. Observe vaginal discharge: A woman’s vaginal discharge may increase during ovulation and change color to clear or brown. These discharges may be uncomfortable, but in healthy women, these changes usually don't have much of an impact on the body.

4. Use a pregnancy test tool: If you want to predict a woman’s ovulation period more accurately, you can use a pregnancy test tool. These tools can predict a woman's ovulation by measuring her serum hCG levels.

While these methods can help women predict when they will ovulate, they are not always accurate. Therefore, it is best for women to consult a doctor before planning a pregnancy to determine the best time and method to get pregnant.

A woman's ovulation period usually occurs about 14 days into the menstrual cycle, but the exact date varies from individual to individual. By measuring body temperature, observing symptoms, observing vaginal secretions and using pregnancy testing tools, it can help women predict their ovulation period and plan pregnancy during this period. Women who wish to more accurately predict when they will ovulate can consult with their doctor to determine the best time and method to get pregnant.