Pregnancy can generally be detected after 37 days of menopause, at this time you can use early pregnancy test paper to test yourself, but the results will have some errors, in contrast, go to the hospital to check HCG and B ultrasound through blood sampling, the results are more accurate: 1. Early pregnancy test paper: under normal circumstances, from the discharge of the egg to the combination with sperm to form a fertilized egg, and then to the fertilized egg into the uterine cavity and fuse with the endometrium after the bed, it usually takes 7-10 days. It takes 7-10 days, i.e. 7-10 days after intercourse, when you can use the morning pregnancy test to detect pregnancy, so pregnancy can be detected by the morning pregnancy test on 37 days after menopause. It is recommended to use morning urine to detect pregnancy. When the pregnancy test shows two lines, one deep and one shallow, it means that you are pregnant, and if the test paper shows one line, it means that you are not pregnant. 2. Blood test for HCG: Besides using early pregnancy test paper, you can also test the blood HCG level to determine whether you are pregnant more accurately. After pregnancy, the body will secrete chorionic gonadotropin, or HCG, so you can determine whether you are pregnant by checking whether the level of HCG in the blood has increased. It should be noted that if the menstrual cycle is irregular or there is a delay in menstruation, it will interfere with the time of HCG detection and may not be detected accurately, so you can wait for another 1-2 weeks to check; 3. Ultrasound: Generally, you can determine whether you are pregnant by observing the pregnancy sac with ultrasound on the 35-42 days of menopause. At the same time, ultrasound can determine whether the gestational sac is in the cavity of the uterus and is used to exclude the possibility of ectopic pregnancy. Moreover, ultrasound can also observe the size and development of the gestational sac, which can prevent fetal malformation to a certain extent.