Ten days after conception, a blood test for HCG can detect pregnancy. By the fourteenth day, a urine pregnancy test may indicate pregnancy. During the third week, a B-ultrasound can reveal a small gestational sac in the uterine cavity.
How long after intercourse pregnancy can be detected is a concern for many female and even male friends. Generally, pregnancy duration is calculated from the first day of the last menstrual period. There is no fixed rule on how long it takes to conceive after intercourse. It is clearer to ask how long after ovulation a pregnancy can be detected. If intercourse occurs during a non-ovulatory period or many days before ovulation, it may take a long time to detect pregnancy. If intercourse occurs during ovulation, the earliest method to diagnose pregnancy is to have a blood test for HCG at a hospital, which can usually detect pregnancy within ten days. This is the earliest method to detect pregnancy. Around the third or fourth week, a B-ultrasound can reveal a small gestational sac in the uterine cavity. If intercourse occurs around ovulation, a pregnancy test stick can be used to test morning urine two weeks later, which is around the time of the next expected menstrual period, and may show signs of pregnancy.
