When can pregnancy usually be detected?

After pregnancy, usually one week after the menstruation is delayed, you can use the early pregnancy test app to detect it. The inspection operation must be applied in accordance with the instructions to avoid incorrect results caused by incorrect operation. The best test is to take the first urination in the morning. The test paper or other test materials should be removed after being balanced at a temperature of 10 to 30 degrees, and the end of the test paper with the arrow mark should be inserted into the urine. Remove it after 5 seconds and observe the displayed result within 5 minutes. Observation is invalid after more than 5 minutes.

If you have sex after ovulation, if you think you may be pregnant, you can go to the hospital for a blood test for HCG about 30-31 days after menstruation to find out whether you are pregnant. If the blood HCG value exceeds 1b250IU/ml, it means that the possibility of pregnancy is very high. If you use the urine HCG test, it is recommended to collect morning urine 35 days after amenorrhea for the pregnancy test, and do not drink too much water 2 hours before collecting morning urine to avoid diluent in the urine, resulting in false negative results in clinical practice. In addition, if there are two red lines, one deep and one shallow, it is recommended to test again after 3-5 days. If there are still two lines, one deep and one shallow, you need to go to the hospital to rule out the possibility of ectopic pregnancy.

If a woman is pregnant, her menstrual period will not occur. If she is a married woman and her menstrual period is relatively normal, she can detect pregnancy if her period is delayed by about 1-2 days. Generally, the simplest and most convenient way is to use a urine pregnancy test paper. If the result of the urine pregnancy test paper is positive, it means that the possibility of pregnancy is high. Some women who are preparing for pregnancy, if they are more concerned about pregnancy, can also go to the hospital for a blood test to check chorionic gonadotropin around the 25th-26th day of the menstrual cycle. If the female hormone level exceeds the normal range, pregnancy is also considered, because the HCG concentration in the blood rises earlier than that in the urine.

It takes about a week for the embryo to implant after the fusion of sperm and egg. After the embryo implants, it begins to secrete human chorionic gonadotropin, which leads to a significant increase in blood hCG, progesterone and estradiol levels. About ten days after conception, blood chorionic gonadotropin can more accurately detect whether the patient is pregnant. About half a month after pregnancy, human chorionic gonadotropin can more accurately calculate whether the patient is pregnant. However, the time of pregnancy is not equal to the time of intercourse, because male sperm can survive in the human body for a maximum of 72 hours. Within this 72 hours, pregnancy is possible at any time of ovulation. Therefore, when calculating pregnancy based on the time of intercourse, at least 2 to 3 days should be added.