I have suffered with nosebleeds all my life, but not had many luckily through pregnancy. I would say people used to tell me to hold my head back and pinch my nose, thats horrible as it runs down your throat. Ive had them go on for an hour heavy, the advice I would give is to keep calm as worrying will just make the blood pump faster round your body, I keep clearing my nose as I always find a clot and if I don't remove it the bleed gets worse (crazy I know as you'd think the clot helps stop it) this is my experience and I have probably had over 1000 in my lifetime so speaking from experience ha xxx