Usually, the time when a woman can detect pregnancy with an early pregnancy test or a pregnancy test is usually more than 16 days after the last intercourse, or if the menstrual cycle is pushed back by about a week. For women who usually have regular menstrual cycles, the chances of pregnancy are particularly high if they have intercourse without contraception and during ovulation, while if the menstrual cycle is delayed by one week, then you can use an early pregnancy test or a pregnancy test, which usually detects pregnancy. This is because the hCG hormone in the urine is already significantly elevated after 35 days of menopause, unless the fertilized egg does not settle in the uterine cavity and causes an ectopic pregnancy, then the time to detect pregnancy with a pregnancy test will be extended and may be after 40 days of menopause. For women who usually have irregular menstrual cycles, the early pregnancy test can only be taken 16 days after the last intercourse, which is more accurate and can usually detect a weak positive or positive reaction, because the appearance of hCG in the urine is later than in the blood, which is why it is relatively delayed, while the time to check the blood hCG is usually earlier and can be detected about ten days after the last intercourse. Therefore, women should not test the test paper too early after intercourse to avoid false negatives, but should test again 16 days after intercourse.