If you have your first period after childbirth and have just had a little menstrual blood, it is clinically possible that pregnancy may be the cause. In the postpartum period, the vast majority of women resume ovulation before they resume menstruation, and if they have had sexual intercourse during the ovulation period, it is clinically possible to become pregnant. After pregnancy, due to insufficient hormone levels in the body, symptoms of pre-eclampsia, which manifests as vaginal bleeding, are mistaken for menstruation. It is recommended to go to the hospital as soon as possible for a blood test, such as a clinical blood test for blood HCG and progesterone, which, if negative, clinically indicates that it is not caused by pregnancy, but may be due to an endocrine disorder. In case of pregnancy, depending on the patient’s needs, whether to continue the pregnancy or to terminate it, the next step of the clinical examination will be done according to the needs.