Seeing red in the 6th month of pregnancy may be caused by late preeclampsia, placenta hypoglossia, cervical lesions and so on. 1. Late preeclampsia: preeclampsia will occur with vaginal bleeding, lower abdominal pain, shortening of the cervical canal, etc., which requires timely application of medication to inhibit contractions to preserve the fetus. 2. Placenta hypoplasia: the placenta is in a low position, close to or covering the endocervical os, often manifested by painless vaginal bleeding, ultrasound examination of the placenta’s position can be diagnosed, and this situation usually requires hospitalization. 3. Cervical lesions: gynecological examination of the cervix can be seen on the cervical organisms, often manifested in vaginal bleeding, leukorrhea abnormalities, etc., cervical polyps in mid-pregnancy caused by bleeding, such as a long period of time, the amount of surgery may be required to remove. If you see red in the sixth month of pregnancy, you should consult a doctor in time to clarify the cause of bleeding and follow the doctor’s instructions.