Pregnancy can be detected in the earliest days

Pregnancy test can be done at least 12 days after conception. Because after pregnancy, about 12 days, the embryo's trophoblast secretes HCG into the blood circulation. HCG is excreted from the urine, when the pregnancy test can show a double bar display. However, pregnancy test measurement has a certain error, may show false negative results in the first trimester. It is recommended that women who are positive for pregnancy test or stop menstruation for more than 7 days should go to the hospital for further examination and diagnosis. In addition, they can also be tested again after 2-3 days. HCG changes rapidly in the early stages of pregnancy. Generally, they can be measured by pregnancy test stick.