Nosebleeds involve bleeding from the inside of your nose. Nosebleeds may be scary, but generally are a minor annoyance. Seek emergency medical attention if nosebleeds are severe, last longer than 30 minutes, interfere with breathing or follow an injury. Call 911 or your local emergency number or have someone drive you. Talk to your doctor if you're having frequent nosebleeds, even if you can stop them fairly easily. Self-care steps for occasional nosebleeds include: Sit upright and lean forward. By remaining upright, you reduce blood pressure in the veins of your nose. Sitting forward will help you avoid swallowing blood, which can irritate your stomach.