After a normal delivery, there is a discharge of nightmare, which takes about 20 days and is basically clean. The first stage is the discharge of bloody nightmare, which takes about seven days; the second stage is the discharge of yellow watery nightmare, which also takes about seven days; the third stage is the discharge of colorless watery nightmare, which also takes about seven days; basically, the nightmare can be discharged in 20 days. If you can’t get rid of it in 20 days and there is still bloody nightmare, you should first consider that the uterus is not contracting well or there is an infection in the uterus. If there is an infection in the uterus, the discharge will have an odor or foul smell, so you need to treat it with anti-inflammatory medication and ultrasound to check the size of the residual material in the uterus. If the amount of residue is large, you should use medication in time. You can drink motherwort pellets or new biochemical pellets to promote uterine contraction and facilitate the discharge of residue in the uterine cavity.