Generally, pregnancy can be detected 15 days after conception with the use of pregnancy test paper.
After a woman has sex during ovulation, the sperm and egg combine in the body to form a fertilized egg, which begins to implant 7 days after it is formed, and implantation is complete in 12 days. The hormones in the body do not change much until the fertilized egg has completed its implantation. About 15 days after pregnancy, the concentration of human chorionic gonadotropin in the urine increases and can be detected with test strips.
If a woman’s menstrual cycle is regular, 28-32 days, when the menstrual period does not come on time, test strips can be used for testing, and a positive performance can be observed.
However, it should be noted that test strips can be inaccurate due to their quality or interference from other hormones. Therefore, if you want to get a clear result, you should go to the hospital and have blood tests done to check for human chorionic gonadotropin in the blood.