Pregnancy can be detected with test strips 10 to 15 days after conception, but it is recommended to take the first urine when you wake up. It usually takes 6 to 8 days for the fertilized egg to settle, and the placental syncytiotrophoblast cells produce human chorionic gonadotropin, which is metabolized into the urine as the pregnant woman’s blood circulates. In the first pregnancy human chorionic gonadotropin secretion is relatively small, the urine content is low, in the 10 to 15 days after intercourse, the chorionic gonadotropin content in the urine increases, the use of test strips can be measured whether the pregnancy. It is recommended to take the first urine in the morning, as it is concentrated overnight and contains higher levels of human chorionic gonadotropin, making it more accurate in detecting pregnancy. If you are pregnant, we recommend that you go to the hospital for an ultrasound, and if you are really pregnant, you can take folic acid under the guidance of your doctor.