After a woman becomes pregnant, the best time to test for early pregnancy is about a week after menopause. For women with regular menstrual cycles, ovulation usually occurs on the 14th day of the menstrual cycle. At this time, about 7 days after the couple has intercourse, the fertilized egg will lay in the uterine cavity to form an embryo, causing the level of chorionic gonadotropin in the female body to gradually increase. It is better to check the test at least 1 week after menopause. Combined with a vaginal ultrasound, a more positive result can be obtained. For women with irregular menstrual cycles, the test should be conducted 2-3 days later. At this time, women who do not require childbearing can terminate the pregnancy through medication or abortion. Ectopic pregnancy detected by ultrasound should also be treated promptly. In addition, the sensitivity of early pregnancy test paper is low, and it is recommended that the patient check several times, or go to the Obstetrics and Gynecology Department of the hospital to take blood tests for blood HCG and vaginal ultrasound to make a clear diagnosis.