The cause of biochemical pregnancy is not well understood, but it is often associated with abnormalities in the development of the embryo itself. This can be caused by an abnormality in the number or shape of chromosomes during the formation of the fertilized egg. The so-called biochemical pregnancy is the embryo has not really developed, through the ultrasound can not be confirmed in the uterus in the signs of pregnancy, with the vaginal bleeding and discharged from the body, then this is biochemical pregnancy. It is recommended not to be nervous once the pregnancy is detected, it is recommended to rest well after the biochemical pregnancy, and it is also recommended that if you plan to get pregnant, it is best to resume 2 consecutive menstrual periods with normal menstrual flow before you consider getting pregnant, and in the case of the next pregnancy, the pregnancy is often a normal pregnancy, so there is no need to intervene in the case of a biochemical pregnancy.