If you are experiencing bleeding at 11 weeks pregnant, it is important to understand the possible causes and take appropriate action. While some spotting can be normal during early pregnancy, heavy bleeding may indicate a more serious issue. Possible causes include implantation bleeding, cervical changes, or even complications like miscarriage or ectopic pregnancy. It is crucial to contact your healthcare provider immediately to discuss your symptoms and get further guidance. They may recommend additional tests or an ultrasound to determine the cause of the bleeding and ensure the well-being of both you and your baby. Remember that every pregnancy is unique, so it's always better to seek professional medical advice for any concerns during pregnancy.