Menstruation 20 days after delivery is usually impossible, but some conditions such as retained placenta membranes and puerperal infections may cause abnormal bleeding 20 days after delivery.
The 6 weeks after delivery is known as the puerperium, during which the mother’s body gradually returns to its prenatal state and she usually does not menstruate. At this time, the mother’s immunity is low and prone to infections, leading to poor repair of the uterine lining and abnormal bleeding 20 days after delivery.
The residual placental tissue in the uterine cavity undergoes changes such as degeneration and necrosis, and when the necrotic tissue falls off, it exposes the blood vessels at the base, causing a large amount of bleeding, resulting in 20 days postpartum bleeding that is suspiciously similar to menstruation but is not a true menstruation.
If a woman has abnormal bleeding 20 days after delivery and the amount is large, it may also be caused by the incomplete restoration of the uteroplacental attachment surface of the uterus, etc. Once found, it is recommended to consult a doctor in time and do relevant examinations under the guidance of the doctor to clarify the cause of the disease and provide symptomatic treatment.