The progesterone is usually above 10ng/mL when the fertilized egg has just been laid. Generally speaking, if pregnancy occurs, the fertilized egg will travel along the fallopian tube to the uterine cavity, and this process is called implantation, which usually starts on the 6th day after intercourse. Therefore, after fertilization, HCG or progesterone in the blood does not rise immediately. As the fertilized egg gradually reaches the uterine cavity, HCG and progesterone in the blood will gradually rise, and at about this time, progesterone is around 5-10ng/mL. However, there are some women whose progesterone starts to rise when they are first implanted in the uterus, and the value of progesterone at this time is usually more than 10ng/mL. To clarify whether you are pregnant, you can go to the hospital for a blood test after your period is delayed, and the HCG value will double a few days after the fertilized egg is laid.