Please have your blood pressure checked as soon as possible. A very high BP can cause nose bleeds...and if your BP IS high enough to be the problem, you need to be treated right away.
Tampons in the nose...works great for nose bleeds.
Quit lipping off to your girlfriend / wife.
It's not just the volume, but how much of it is composed of red cells, though it troubles me to think of you bleeding enough out your nose to make your legs numb; that's just a heck of a lot of blood. Perhaps you have anemia due to something else. Worth checking on; my mom had colon cancer causing it.