It can usually be detected with a test strip after 10-14 days after conception. Usually, it can be detected after 10-14 days after conception by using early pregnancy test paper, and it is usually recommended to check it 3-4 weeks after coitus, and women with regular menstruation can also check it 3-5 days after menstruation postponement, and it is possible to fail to detect it in the early checking if the conception is relatively late, and you can also delay the checking time appropriately. In addition, the test paper may be weakly positive, it is recommended to go to the hospital for blood HCG (chorionic gonadotropin) and ultrasonography, through the ultrasonography found that there is a gestational sac in the uterus, it can be determined that the pregnancy is in the uterus. In the early stage of pregnancy, as the fetus is not yet stable, it is necessary to ensure sufficient rest time, avoid sexual intercourse, and refrain from strenuous exercise, so as not to cause miscarriage. Pregnant women should pay attention to prenatal checkups during pregnancy, and actively listen to the advice of professional doctors to do a good job of comprehensive care and health care, which can effectively ensure the safety of delivery.