Intercourse a week after ovulation is usually not pregnant, and in a few cases, menstrual disorders can lead to uncertainty about ovulation, which may lead to pregnancy. Strictly speaking, the egg discharged from the ovary will survive in the fallopian tube for 1~2 days, and if you have intercourse on the day of ovulation, the chance of conception will be greater. The ovulation period is defined as 5 days before and 4 days after the day of ovulation, plus one day on the day of ovulation, a total of 10 days, which is known as the ovulation period. One week after ovulation is a safe period, and this situation is usually not pregnant. However, there are a few women who are prone to menstrual disorders, irregular ovulation day, ovulation can not be determined, if the ovulation day is delayed for a week, this situation of intercourse may be pregnant. It is generally inaccurate to determine whether you are pregnant by having intercourse one week after ovulation, and you should go to the hospital for a checkup, such as taking blood to test the HCG value.