The chorionic gonadotropin level can be tested by blood draw about 1 week after the fertilized egg bleeds on implantation and pregnancy is highly suspected if it exceeds 25 IU/L. In a few cases, the slow development of the fertilized egg may result in a late detection of pregnancy after the bleeding at implantation, which is normal. The bleeding from fertilization is usually small and is related to the rejection of the endometrium. In case of bleeding at implantation, it is important to keep your mood relaxed and go to the Obstetrics and Gynecology Department to have blood tests for chorionic gonadotropin and progesterone levels. If the hormone level is low, you should be given chorionic gonadotropin or progesterone medication for fetal preservation under the guidance of your doctor. In addition, if a woman bleeds a lot, it may lead to biochemical pregnancy or spontaneous miscarriage or embryonic abortion, which needs to be taken seriously. In conclusion, bleeding at implantation is only an isolated phenomenon that occurs in a few people and needs to be given timely observation and treatment.