Conceived but not implanted has little effect on the body, has not completed the reaction of implantation, and will not do any harm to the lining of the uterus. Conceived but not implanted is usually a biochemical pregnancy, where the sperm meets the egg after intercourse to form a fertilized egg, but it does not successfully implant in the uterine cavity. Biochemical pregnancy is a blood test for HCG (human chorionic gonadotropin), which rises transiently and then falls quickly to normal levels. There is no morphological evidence of pregnancy in the ultrasound examination, and there is no reaction to the completion of the implantation of the egg, so there is no damage to the uterine lining, and the impact on the body is not significant. Biochemical pregnancy is similar to the usual menstruation, and does not need to be cleaned to deal with the uterus, once in a while a biochemical pregnancy does not need special treatment, but the phenomenon of multiple pregnancies with biochemical pregnancy, to find out the cause and then targeted treatment.