Keep calm. Bloody noses can be scary, but they are rarely dangerous.
Use a pinch. Pinch the soft part of your nose shut for 10 minutes. Pinch the SOFT part (the nostrils), NOT the bony upper part! Use a clock to keep track of time. Resist the urge to peek after a few minutes to see if your nose has stopped bleeding.
Lean forward. If there is blood in your mouth, spit it out; do not swallow it.
Stay upright. Do not tilt your head back or lie flat. This may cause you to choke on blood. Blood in the stomach can make you sick to your stomach and cause vomiting.
Take it easy. Once bleeding has stopped, do not blow your nose for two days.