It usually takes 14 days after intercourse to detect pregnancy with a pregnancy test.
After intercourse, the fertilized egg will implant and develop within 7 days, and the fertilized egg will secrete human chorionic gonadotropin about 6 days after implantation, and then its concentration in the blood and urine will appear to injure the kidneys.
The principle of early pregnancy test is to detect the concentration of human chorionic gonadotropin in the urine to determine whether the pregnancy, it usually takes 14 days after coitus for the concentration of human chorionic gonadotropin in the urine to rise, and then you can use the early pregnancy test to detect whether the pregnancy.
It is recommended to measure morning urine, which has a higher concentration of human chorionic gonadotropin and is conducive to a smooth test.
It should be noted that the use of early pregnancy test paper to test pregnancy reaction is not 100% accurate, there may be false-positive or false-negative, can only be used as a means of initial screening.
It is recommended that you can go to the hospital to get a clear picture of your pregnancy through blood tests of human chorionic gonadotropin levels and uterine ultrasound, and can confirm whether it is an intrauterine pregnancy.