Generally, pregnancy can be detected about 10 days after intercourse, but there are individual differences.
For women of childbearing age, after intercourse during ovulation, fertilization will be completed within 24 hours after ovulation, and the fertilized egg will implant 6-7 days after fertilization, and the fertilized egg will start to secrete HCG (human chorionic gonadotropin) one day after implantation. Therefore, pregnancy can be detected about 10 days after intercourse by testing the blood for HCG, but there are individual variations.
For women with long menstrual cycles or menstrual disorders, as the time of ovulation and the time of fertilization will be late, so the detection of pregnancy will also be delayed, you can be guided by the doctor to carry out the examination, when the pregnancy is confirmed, but also to carry out ultrasound to clarify the normal intrauterine pregnancy, and according to the size of the gestational sac and the size of the fetal buds to check the gestation period, and continue to carry out obstetric examinations on time.