The earliest way to confirm pregnancy is to perform a blood HCG test to find out if there is a possibility of pregnancy. After successful conception, that is, after the formation of a fertilized egg, the fertilized egg gradually moves from the fallopian tube to the uterine cavity and implants in the endometrium in conditions where the endometrium is fully prepared. After 1-2 days after implantation, that is, about 7-8 days after the formation of the fertilized egg, the corresponding HCG test can be performed and a relatively significant increase can be detected, which is different from the normal non-pregnant blood HCG measurement, so the earliest way to confirm pregnancy is to perform a blood HCG test.