A small amount of vaginal bleeding 5 months after childbirth is often related to the following factors: 1. it may be the first menstruation after childbirth, because the first menstruation after childbirth is clinically different from the previous menstruation, some people will have more, some will have less, it is recommended to continue to observe. 2. it is clinically possible that the phenomenon of pre-eclampsia is caused by pregnancy, because most of them have not resumed menstruation 5 months after childbirth. However, some people have resumed ovulation, and without knowing ovulation, they have sex without taking contraceptive measures, so they may become pregnant. A small amount of vaginal bleeding may occur due to the lack of progesterone in the body or other reasons, so it is recommended to have a blood test for HCG to rule out the possibility of pregnancy. 3. If it is a small amount of bleeding 5 months after delivery, it is also recommended to have a gynecological examination to rule out bleeding caused by the rupture of capillaries due to vaginal polyps or cervical polyps.