In case of vaginal bleeding during pregnancy, first of all, it is considered to be caused by preterm miscarriage. If it is in the early stage of pregnancy, it can be treated under the guidance of a doctor by taking birth control pills, progesterone injections, progesterone tablets, etc. Secondly, vaginal bleeding may also be caused by diseases, such as vaginitis, acute seizures, preterm labor, placental abruption, etc. External factors may also cause vaginal bleeding, such as external impact on the abdomen of the pregnant woman, sexual intercourse during pregnancy, etc. When pregnant women find vaginal bleeding, it is recommended to go to the hospital for examination in time. During pregnancy, you should pay attention to your life and diet, don’t stay up late and work hard, pay attention to rest, keep a rich diet and don’t eat spicy and stimulating food. It is recommended not to have sexual intercourse during the first and second trimesters of pregnancy, as it is likely to cause miscarriage.