Patients who have spontaneous abortions and keep bleeding large clots are considered to have poor uterine recovery and residue in the uterine cavity, as well as to have an infection. Most spontaneous abortions are complete, but some are incomplete. There may be a little embryonic tissue left in the uterine cavity, which may affect the recovery of the uterus and lead to increased bleeding. In this case it is recommended to have an ultrasound, and then you can choose to perform a clearance procedure under ultrasound. As soon as the residual tissue is removed from the uterine cavity, the bleeding will be significantly reduced. After the cleaning, you also need to use contraction agents, the more commonly used is the contraction, and also take drugs to promote the recovery of the uterus, like motherwort, biochemical granules, etc. In addition, pay attention to rest.