This has only happened to me three times in my life that I can remember. One of those times was just now. I was posting in a thread and a drop of blood fell from my nose then started pouring out. Another time I was walking home from work and all of a sudden I felt a few drops on my hand. I thought it was raining at first then before I knew it my face and shirt were soaked in blood. Here is the pic of the napkin from today's nose bleeding. It wasn't too bad.