What is the latest time for testing pregnancy during sexual intercourse? Many women generally do not know when they are actually pregnant, because in the first few days or weeks of pregnancy, we do not feel anything, so even if we are pregnant, we do not know until early pregnancy symptoms appear. How long can pregnancy be detected after sexual intercourse?
The fertilized egg has no connection with the mother before implantation, so we cannot know its existence. After implantation, the outer layer of the trophoblast cells of the fertilized egg produces a protein degrading enzyme that dissolves the endometrium in contact with it. The fertilized egg is then buried in the functional layer of the endometrium, and at this time, the syncytiotrophoblasts will develop and extend many cell protrusions in a uniform villous shape, called villi. So the hormone it secretes has a very strange name - chorionic gonadotropin (HCG). Now, we can accurately calculate how many days after AA we can detect the presence of this hormone!
After fertilization, the egg takes 4-5 days from the fallopian tube to the uterus and stays in the uterine cavity for 3-4 days. This process takes a total of 7-9 days. Therefore, if you use a highly sensitive (15 international units) early pregnancy diagnostic kit, it will take about 7 days after ovulation day AA; It is very normal and reasonable to measure HCG around 12 days after ovulation using a regular early pregnancy test strip (25 international units).
Generally speaking, women can usually determine whether they are pregnant within a week to 10 days after actual pregnancy.
Once the male sperm and female egg combine to form a fertilized egg, about 7-10 days after the fertilized egg implants in the endometrium, the placenta of the pregnant woman will secrete a special substance called human chorionic gonadotropin, which is often referred to as HCG in medicine. It only exists in the pregnant woman's body. About a week after pregnancy, human chorionic gonadotropin will appear in the pregnant woman's urine, but the secretion of this substance is relatively low in the first few days of pregnancy and is not easy to detect. It is usually more obvious between 10-14 days after pregnancy.
Generally speaking, after about 18 days of normal sexual activity, pregnancy can be determined by testing urine, especially morning urine. After sexual activity, pregnancy can be detected as early as one week and as late as about three weeks.
After sexual intercourse, the sperm and egg combine to form a fertilized egg, which then implants. This process takes time, so pregnancy cannot be detected immediately after sexual intercourse. After about a week, we can check if we are pregnant, which can prevent accidents and make sufficient preparations for our pregnancy.
