No blood after spontaneous abortion is mostly normal, it may be that the blood sinuses are closing better. Generally speaking, most of the spontaneous abortions are biochemical pregnancies, which can be seen in the elevated blood HCG, but there is no obvious gestational sac, so the spontaneous abortion may also occur without bleeding, if there are no other uncomfortable symptoms, then it is recommended that you can observe, do not be too anxious. If there is abdominal pain or elevated temperature after spontaneous abortion, then it is recommended to consult a doctor in time, through the examination of blood HCG or ultrasound, to see whether there is residual as well as infection. It is recommended that patients after spontaneous abortion should pay attention to regular checkups and menstruation afterward. If there is any abnormality, it is recommended to consult a doctor in time.