There are always so many questions and concerns that women have about pregnancy. Some of them have obvious pregnancy reactions and can know soon after they are pregnant, but some of them do not have obvious pregnancy reactions, how can they know they are pregnant? How many days after pregnancy can you detect it? The whole process of conception To know how many days to detect pregnancy, it is necessary to understand the process of conception. During the 4th to 6th day after fertilization, the fertilized egg has not yet taken root and settled, it is suspended in the uterus, drifting, fully absorbing nutrients and continuing to divide until it becomes a blastocyst with a head and a tail with cellular classification. At the beginning of day 7, the healthy blastocyst cell grows a small tail-like drill for drilling into the wall of the mother’s uterus, which will later develop into an umbilical cord attached to the mother. On day 7 to 10 the blastocyst finds a suitable and comfortable position on the uterine wall. Then the little drill starts to pierce the mother’s uterus and drill into it. Here some mothers will feel a stabbing pain in their lower abdomen from time to time, and also a little bit of reddish blood on their underwear, which is the blood flowing from the area that was drilled. At this time, the small cells can become a blastocyst, which has divided into nearly 100 cells and started to secrete the chorionic hormone HCG on its own, and more and more as the days go by. How many days does it take to detect pregnancy? It is usually detected 7-10 days after sexual intercourse, and the longer it takes, the more accurate it is. The pregnancy test works by detecting the HCG value, which is the value of human chorionic gonadotropin. This hormone is produced by the placenta and usually appears in the urine after a few days of pregnancy, but due to the small amount, it is not easy to detect at first and does not become increasingly evident until 10 to 14 days. What are the methods to detect pregnancy? The first one is the early pregnancy test. This is the most common method, which can be detected at the earliest 7 days after intercourse, and generally 18 days after intercourse, with a few taking more than 20 days to be detected. The 7-10 days after menstruation is to make the test result more accurate. The best time to test should be 18 days after intercourse, or 7 to 10 days after the next menstrual delay is appropriate. The second one, the blood or urine HCG test can be the earliest way to diagnose an unwanted pregnancy. When the fertilized egg implants in the uterus the pregnant woman’s body produces a new hormone called chorionic gonadotropin, which works to facilitate the maintenance of the pregnancy. This hormone can be tested for in the urine about 10 days after conception. The early pregnancy blood test detects the amount of human chorionic gonadotropin in your blood, not urine. The blood test detects a very small amount of the hormone, so it can find out if you are pregnant much earlier (usually about 6 to 8 days after ovulation) than the urine test. The third type, basal body temperature test The basal body temperature test is used to detect pregnancy by taking your body temperature every morning when you wake up in bed. The body temperature is usually below 36.5 degrees before ovulation. After ovulation, progesterone rises and acts on the body temperature center, causing the body temperature to rise by 0.3-0.5 degrees. If the egg is not fertilized, the progesterone drops after about a week and the body temperature returns to normal; if the pregnancy has already occurred, the progesterone remains at a high level and the body temperature also remains high. If the high temperature curve in basal body temperature persists for more than 18 days, early pregnancy is usually confirmed.