During the ovulation period, when a woman engages in sexual intercourse and the egg and sperm meet, a fertilized egg is formed, which indicates that the female friend has already conceived. However, the timing and situation of the fertilized egg implantation are usually complex, with some women having an early implantation time and others having a later implantation time. So, when can the late implantation of pregnancy be detected?
Under normal circumstances, if a woman's menstrual cycle is relatively regular and she has normal sexual activity, pregnancy can be detected about 10 days after the end of sexual activity or when her menstrual cycle is delayed by a week. After the egg and sperm synthesize a fertilized egg, it takes more than 7 days to enter the endometrium and implant. During this period, the blastocyst forms the cells of the trophoblast layer, and the placenta begins to secrete HCG before it can enter the urine. Taking into account all factors, it is more scientific to test for pregnancy in the urine about 18 days after sexual activity.
In the first week after sexual activity, the amount of HCG secreted is very low, usually around fourteen days, and a few women need about twenty days to detect pregnancy. The standard for diagnosing early pregnancy is to test the HCG value in the mother's blood or urine. Female friends can use pregnancy test strips or go to the hospital for HCG testing.
It should be noted that even if the result of using pregnancy test strips is positive, the possibility of ectopic pregnancy must also be considered, and even other diseases must be taken into account. So when using pregnancy test strips for testing, it is also necessary to go to the hospital for formal examination to avoid danger.
