Pregnancy can be determined by checking the blood HCG level 7-10 days after sexual intercourse, and by checking the urine HCG 10-14 days after sexual intercourse. If menopause is greater than 40 days, intrauterine gestational sac can be seen by ultrasound. The concentration of chorionic gonadotropin, or HCG, in the blood rises to a detectable level 10 days after sexual intercourse, and pregnancy can be detected by checking blood HCG. You can also test your urine with early pregnancy test paper or pregnancy test about 7-10 days after sexual intercourse, and if the result is positive and combined with clinical manifestations, pregnancy can be diagnosed. In addition, women with a positive result on the morning and early pregnancy test or pregnancy test stick are still recommended to go to the hospital to have their blood HCG level checked under the guidance of an obstetrician for a more definite pregnancy diagnosis. However, an ultrasound examination is also required 40 days after menopause to determine if the pregnancy is intrauterine. Do not be overly nervous after pregnancy, keep a happy mood, eat a light diet, eat more folic acid-rich foods to prevent fetal neurovascular malformations, and have regular pregnancy checkups.