Pregnancy test will be detected after 14 days after sex if pregnancy is successful. If you are unsure of the exact time of ovulation, you will be able to detect pregnancy later. It takes about one day for the egg and sperm to fertilize after sex, it should take 3 days for the fertilized egg to enter the uterine cavity through the fallopian tube, and 3-4 days for the fertilized egg to successfully bed in the uterine cavity. Human chorionic gonadotropin is secreted after the fertilized egg completes its bedding, and the hormone can be detected in the blood and urine, but is not appropriate to be detected in the The hormone can be detected in blood and urine, but in the first few days of pregnancy the amount secreted is small and should not be detected. The test strips detect human chorionic gonadotropin in the urine, and it is more noticeable more than 14 days after sexual intercourse.