Hi my dear,
Swollen nose with a knot and bruising could be related to the injury
. You should apply cold compresses to the affected area to avoid the place becoming dark.
It is normal for the nose to be sore after such injury. I'd suggest to take acetaminophen
for the pain and to apply local analgesic
To get sure if your nose is broken, if after a week, it will still be sore and painful and swollen, should consult an ENT specialist
and to do an X-ray of the nose/sinus.
Wish fast recovery!