Pregnancy is usually not yet detectable by early pregnancy tests from 1 to 7 days. Early pregnancy test strips assist in the diagnosis of early pregnancy by measuring the presence of human chorionic gonadotropin (HCG) in the urine of a pregnant woman. HCG is produced in the pregnant woman’s body when a fertilized egg implants in the uterus, and this hormone can usually be detected in the urine about 10 days after conception. HCG may still be low in the body from 1 to 7 days of pregnancy, so it may not be detectable at this time. In women with regular periods, pregnancy can usually be detected around 40 days after menopause. However, the use of pregnancy test paper or pregnancy stick for self-testing will have a certain deviation, to further determine the need to go to the hospital for testing, through the blood test HCG, urine pregnancy test to determine whether the pregnancy, but also through the gynecological ultrasound to clarify the location of the gestational sac is in the uterus. Therefore, in order to determine whether you are pregnant, it is recommended to go to the hospital for relevant examinations, and at the same time can rule out ectopic pregnancy.