If you are bleeding at eleven weeks of pregnancy, it is more likely to be a preterm miscarriage, but cervical and vaginal lesions cannot be ruled out. If cervical and vaginal lesions are excluded and the bleeding originates from the uterine cavity, ultrasound examination is recommended to find out the condition of the embryo in the uterus and whether there is a fetal heartbeat. If the presence of fetal heart is confirmed as preterm miscarriage, it is recommended to give timely fetal preservation treatment, generally using natural progestin to preserve the fetus. During the period of fetus preservation, you should pay attention to rest, avoid straining, do not eat spicy and cold food, prohibit intercourse, and closely monitor the situation of the embryo in the uterus and the change of progesterone value.