It is possible to keep the pregnancy alive when bleeding on day 12 of a fresh embryo transfer, and you will need to follow your doctor’s instructions for the use of fertility preservation medication. Fresh embryo transfer is a kind of in vitro fertilization-embryo transfer, which needs to be operated by professional physicians. After the transfer, we should pay attention to appropriate rest, not to exert oneself and strenuous exercise, when bleeding 12 days after the transfer of fresh embryos, there may be the risk of preterm miscarriage, you need to follow the doctor’s advice for blood HCG (human chorionic gonadotropin) and progesterone measurement, and follow the doctor’s advice to actively give progesterone to protect the fetus treatment. After the transfer of fresh embryos, it is also important to prohibit coitus, increase nutrition, generally about 2 weeks after the transfer of blood or urine HCG measurement to confirm pregnancy, and about 4 weeks after the transfer of ultrasound examination to confirm the normal intrauterine pregnancy. However, when abdominal pain and vaginal bleeding occurs, you need to go to the hospital in time and follow the doctor’s advice to actively treat.