It is normal to have nightmare 20 days after delivery. Normally, the time to clean up is 4-6 weeks, there are individual differences, and the normal nightmare does not smell bad, but can have a bloody smell. 20 days after childbirth, the current nightmare should belong to the white nightmare, which mainly has necrotic degenerated meconium, epithelial cells and a large number of white cells and bacteria, belongs to the normal case of white nightmare. If there is an odor or red color, it may be a bit abnormal. If the nightmare is still red after 20 days, it may be a poorly rejuvenated uterus and you need to consider using medication to promote contractions and prevent late postpartum bleeding. If there is still a foul odor, you may have an infection in the uterine cavity and you need to consider antibiotics if necessary. Generally, if the color is not red and there is no odor. This is a normal condition and there is no need to worry about it. You can observe the changes in color, amount and odor of the nightmare every day.