Women with regular menstrual cycles usually have a period once a month and can check for early pregnancy at about 6 weeks of menopause. A woman has sex during ovulation, which occurs around 7-8 days. If the egg and sperm are able to unite and develop into a fertilized egg, it will be transplanted from the fallopian tube to the uterine cavity for bed growth and development, stimulating the ovaries to secrete increased levels of chorionic gonadotropin, which is highly suspected of early pregnancy if it exceeds 25 IU/L. However, if you want to check whether a normal intrauterine pregnancy has occurred, you need to have a blood test for chorionic gonadotropin level about 10 days after the postponement of the menstrual cycle or about 20 days after the last sexual intercourse, and the diagnosis can be made only if it is significantly higher and if there is the growth of a gestational sac and the appearance of a fetal bud in the uterine cavity by gynecological ultrasound. In conclusion, a woman’s early pregnancy can be determined by a comprehensive urine pregnancy test, a blood test for chorionic gonadotropin or a gynecological ultrasound.