Patient's question:
I usually have a very regular menstrual cycle, but this month it has been delayed by 5 days, and my period has not arrived yet. I have used a pregnancy test kit and it showed only one line, indicating that I am not pregnant. I am very anxious now and considering going to the hospital for further examination.What kind of help do I need: How many days after conception can a pregnancy test detect it?
Doctor's answer:
For women with regular menstrual cycles, pregnancy is relatively easy to determine. About 18 days after intercourse or a delay of 7-10 days in menstruation, pregnancy can be tested. This is because after sperm and egg combine to form a fertilized egg, it takes 6-8 days to implant in the endometrium. Then, it takes another 7-10 days for the placenta to secrete HCG, which can enter the urine. Adding these two periods together, testing for pregnancy in the urine 18 days after intercourse is scientifically accurate.After sexual intercourse, pregnancy can usually be detected within 7 days, most commonly around 14 days, with a few cases taking more than 20 days. It can be confirmed using self-testing kits or HCG tests at a hospital. If menstruation is delayed by a week, suspicion of pregnancy should arise, and a urine HCG test should be conducted at the hospital to confirm. If the delay lasts for a month, doctors can generally identify pregnancy signs, making it easier to confirm the pregnancy.
In rare cases, some women may still experience one or two menstrual periods even though they are pregnant, but the amount of blood flow is less than usual, and the duration is shorter. This condition is known as "leaking menstruation" in traditional Chinese medicine.