Because women who are pregnant or breastfeeding do not ovulate or menstruate, women who are not breastfeeding after childbirth will slowly regain ovulation and menstruation, but at this time the ovaries have not fully recovered and may suffer from anovulatory dysfunctional uterine bleeding, resulting in excessive menstrual clots. As this is often combined with anaemia, it is important to seek medical attention for excessive menstrual clots after childbirth.