When a woman is 45 days pregnant, a sudden stream of fresh blood with blood clots comes out of her vagina, which usually belongs to preeclampsia, and some gynecological diseases can also lead to the occurrence of similar phenomena. 1. When a woman is 45 days pregnant, the embryo is still relatively weak, and it is easy to cause preeclampsia for various reasons. Patients with preeclampsia often notice a sudden discharge of fresh blood from the vagina, sometimes with blood clots. The bleeding is often accompanied by obvious abdominal pain. 2. Some women develop significant cervical or vaginal lesions after pregnancy, which can sometimes lead to vaginal bleeding when they are about 45 days pregnant, and in some cases, clots can be found in the bleeding. Women who are 45 days pregnant and have symptoms of vaginal bleeding or blood clots at the same time should consult a doctor promptly, do relevant examinations actively and take effective treatment measures.