It is possible to get pregnant by having intercourse 5 days before ovulation, but this needs to be judged according to the specific menstrual cycle. If you have a regular menstrual cycle of 28-30 days, about 14 days before your next menstrual period is usually the day of ovulation. 5 days before and 4 days after the day of ovulation is the ovulation period, which can also be called the danger period, it is possible to get pregnant if you have intercourse at this stage, because normally, the sperm does not die immediately after intercourse, but stays in the female reproductive tract for 24-48 hours, and maintains a certain fertilization ability. It stays in the woman’s reproductive tract for 24-48 hours and maintains a certain level of fertilization, while the egg survives for 12-24 hours after ovulation, which may cause pregnancy when the two meet. In addition, a woman’s ovulation is easily influenced by her emotions and external environment. For example, if you are stressed, nervous or in an unfamiliar environment before the expected ovulation period, you may also experience early ovulation and increase the possibility of pregnancy. However, if the menstrual cycle is irregular or long, ovulation may occur irregularly, and it is difficult to determine whether pregnancy will occur through ovulation at this time. A woman can use ovulation to initially determine if she is pregnant, but a more accurate way to determine if she is pregnant is to take a blood test as well as a urine pregnancy test. If there are no plans to have children, it is generally recommended to use safe and effective forms of contraception to prevent unwanted pregnancies.