Ovulation is a time when hormone levels change in a woman's body and is also an important period for pregnancy. However, for most people, they don't know how many days ovulation lasts, and therefore, they may miss their chance of getting pregnant.

Generally speaking, during ovulation, women's body temperature rises and their appetite increases. Additionally, they feel tired and energetic. These are normal physiological responses, but they do not accurately predict the duration of ovulation.

Therefore, if you want to get pregnant, it is best to measure your temperature and record its changes. Additionally, you can observe your own secretions and determine if they are increasing. If your discharge increases and it looks like clear, colorless, and sticky discharge, it may mean you're ovulating.

Of course, this is just a simple prediction method and does not guarantee that you will get pregnant. If you want to get pregnant, it's best to engage in appropriate physical exercise, maintain a healthy diet, and ensure you get pregnant under safe sexual practices.