I got accidentaly hit exactly on the nose by my friend's head. I'm feeling dizzy and feeling pressure on nose. I don't have trouble breathing but my n?

Hit on the nose hurt. If you got hit on the nose by your friend's head - ouch!. It is normal to feel pressure on your nose. As long as you didn't lose consciousness and didn't have a nose bleed and you can breathe ok, no further evaluation is needed. If any of these is true, go see your doctor.