Whether it is normal to have black discharge eleven days after transplantation should be judged according to the situation, it may be a sign of preeclampsia or it may be normal. Black discharge eleven days after successful transplantation should be taken seriously, it may be caused by preeclampsia, which is an abnormal phenomenon, and it is recommended to go to the hospital as early as possible for examination, such as ultrasound, progesterone and thyroid hormone examination. The hormone level in the body will change after transplantation, in this case there will be a small amount of bleeding, which is a normal physiological phenomenon, do not worry too much. After transplantation to prevent signs of preeclampsia, at this time, pay attention to do a good job to protect the fetus, if the low progesterone indicates the need to supplement progesterone. It is recommended to do a good job during pregnancy to adjust measures, avoid overwork, avoid heavy physical work. After transplantation, we should pay attention to maintain a good mood, pay attention to rest, and regularly go to the hospital for examination, to understand the development of the fetus, if there is any abnormality, we should timely treatment, and do a good job of preservation of the fetus.