Ovulation is the process of releasing an egg cell, which usually occurs during a woman's menstrual cycle. This process is usually completed by the woman's ovaries and can last several days or weeks. However, many people believe that ovulation can only occur during the ovulation period, which is a wrong understanding. In fact, ovulation can occur at any time in the menstrual cycle, including ovulation.

In addition, a woman's menstrual cycle is also affected by many factors, including genetic factors, hormonal levels, lifestyle and environmental factors. Therefore, it is not possible to accurately predict when an egg will be released, nor whether an egg will be released during ovulation.

Therefore, although ovulation can occur at any time in the menstrual cycle, not all eggs are released during this phase. Therefore, if you want to get pregnant, it's best to find the right time to have sex during a woman's menstrual cycle. Additionally, if you have any fertility concerns, it’s best to consult a doctor or a professional fertility counselor.