Probably should see a doctor, as I PMed you. Posting here for others.
It is normal to have a lot of blood in a nosebleed if your nose is stuffed up somehow e.g injury.
Is it just one nostril? If so then maybe that one is damaged. If both, something else might cause it.
Do you take a lot of aspirin? it makes bleeds happen more easily. especially if you are someone with fine blood vessels.
Is something raising your blood pressure more than usual? Drugs, stress, anger, hot weather, insulin spikes can all do this. Again, you'd need fine blood vessels to begin with for them to be susceptible.