A week after the ovulation of coitus generally will not affect the implantation, but should pay attention to not too frequent. Fertilized egg formation occurs within 24 hours after ovulation, and the fertilized egg will move into the uterine cavity after 6 to 7 days, whether the fertilized egg is successful by the body of estrogen and progesterone levels, endometrial tolerance and other factors. Therefore, when you have intercourse one week after ovulation, it will not affect the implantation of the egg, but you should pay attention not to be too frequent. For women who wish to have children, they can determine the ovulation period through the basal body temperature method and cervical mucus observation method under the guidance of the doctor to guide coitus and improve the chance of conception. A blood HCG (human chorionic gonadotropin) level test can be performed about 10 days after intercourse to confirm pregnancy, and an ultrasound can be performed about 40 days after menopause to clarify intrauterine pregnancy.