Nose bleeds are
commonCommon cold, even in
normalNormal saline flush healthy people. Not infrequently the
noseNose fracture will bleed backwards into the
throatCancer - throat or larynx
Throat swab culture and then be coughed up. That makes it hard to know if it is coming from the nose or from the lungs. If you continue to raise blood, you should have a thorough examination of your nose by an ENT specialist. He/she should be able to determine the source of the blood, especially if it is actively bleeding. You should also have a chest x-ray to be sure that some of the blood is not coming from your lungs. Blood in mucus, coughed up from the lungs, is always abnormal, even when the x-ray is normal, and it should be thoroughly evaluated by a lung specialist.
Good luck.