My boyfriend has frequent heavy nose bleeds he has had

Patient: My boyfriend has frequent heavy nose bleeds he has had 6 in the last 24 hours. He lays down to slow them down and can feel them going down his throat when he feels like it has lightened up he will cough and up comes a blood clot and it starts bleeding all over again. I am worried that this might be serious or what we should do

Symptoms: Severe bloody nose that is frequent

Doctor: