Bleeding from the belly button, or umbilicus, is usually a sign of infection, states Zocdoc.com. The skin in the umbilicus is moist, creating an ideal place for an infection to grow. A less common cause is a small cyst or duct leftover from fetal life, known as a urachal remnant.
Signs of infection in the umbilicus include redness and painful swelling, according to Zocdoc.com. This condition is usually treated by topical antibacterial or antifungal cream as prescribed by a doctor. A uruachal remnant, on the other hand, may require surgery upon medical inspection. Without question, it is highly advisable to see a doctor if one is experiencing any of these symptoms.