It is not accurate to say which day is more fertile, the day of ovulation or the day of ovulation; ovulation includes the day of ovulation and the two are generally not compared. A woman’s day of ovulation is usually about 14 days before her next menstrual period, and the day of ovulation and the five days before and four days after it are added together called the ovulation period. This is projected in conjunction with the menstrual cycle, which is accurate to project the correct day and period of ovulation. However, because ovulation is affected by many factors, such as changes in the external environment, emotional changes, diet, etc., it is difficult to accurately calculate the day of ovulation. It is difficult to accurately calculate the day of ovulation, so the chances of getting pregnant are usually increased by having intercourse every other day during the ovulation period. If you want to get pregnant, monitor ovulation and have intercourse during ovulation.