The fastest way to detect pregnancy after intercourse is 7 days, and it takes about 14 days for the test paper or pregnancy test to detect pregnancy, and the time to detect pregnancy varies with different testing methods.
Women who have sex without contraception during ovulation, the sperm and egg combine to form a fertilized egg, once the fertilized egg is implanted in the body, the HCG (human chorionic gonadotropin) will rise significantly, generally one week after intercourse, you can determine pregnancy through blood testing of human chorionic gonadotropin, which is the fastest way to check for pregnancy.
If you use pregnancy test paper or pregnancy test stick to detect pregnancy time will be delayed a bit, because the HCG in urine rises slowly, generally have to wait until about 14 days after intercourse to detect pregnancy, or wait until the regular menstruation delayed for 3-7 days to detect pregnancy. ultrasound to wait until the menopause of about 42 days to check the pregnancy.
After intercourse, you should closely observe your menstrual cycle. If you suspect that you are pregnant or your menstrual cycle is delayed, it is recommended that you check your blood HCG or use a test strip to see if you are pregnant.