A blunt object fell on my nose, just below the bridge of my nose?

Once the inflammatory response subsides, and after 6 weeks, if they persist then you can seek treatment with laser. The KTP 532 nm laser or 1064 nm YAG laser are good treatment options. 

If this is really just a few days old, it may clear on its own. If not, there are ways to treat the redness, as long as it is not a sign of an infection. If you are concerned, you should have a specialist take a look at the area.