40 days after childbirth, there is a small amount of bleeding.

For women who give birth naturally, the time for lochia to be clean is about 25-30 days after birth, and there is a small amount of vaginal bleeding in 40 days after birth, which is caused by poor uterine contraction and reinstatement, or residual placenta and fetal membrane tissue. For women who terminate pregnancy by caesarean section, there is a small amount of bleeding in 40 days after birth, which is caused by abnormal abdominal incision in addition to poor uterine contraction and reinstatement. If it is accompanied by persistent lower abdominal pain, it is also considered to be caused by intrauterine infection. Therefore, it is recommended that such women must go to the hospital gynecology department, review the color Doppler ultrasound to confirm the specific cause, and then carry out the corresponding hemostatic treatment.