Do girls have periods after pregnancy?

After pregnancy is not menstruation. The main symptom of pregnancy is menstrual stop, if the vaginal bleeding after pregnancy, pay attention not to menstruation, to consider abortion or ectopic pregnancy, but also to exclude trophoblastic diseases, such as hydatidiform mole, choriocarcinoma and so on. In the second and third trimester of pregnancy to consider placental factors, such as placental abruption, placenta previa vascular rupture, but also consider abortion, premature delivery and cervical lesions, such as cervical polyps, cervical cancer, will cause bleeding during pregnancy phenomenon, systemic diseases such as coagulation disorders, will also cause vaginal bleeding.