I've been sneezing quite a bit lately, but otherwise no allergy problems. today, i sneezed and it was full of blood. my nose is not raw or in discomfo?

Nosebleed : Nosebleeds are common and just mean a small blood vessel has broken inside the nose, this time just because sneezing is mechanically sort of violent for nasal tissues. If you bleed a LOT and it doesn't stop in a few minutes, it could be a larger blood vessel, or maybe due to taking aspirin or Advil. Here's a link http://www.m.webmd.com/a-to-z-guides/nosebleeds-causes-and-treatments