Dear friend, welcome to HCM!
is definitely sore from Cocaine snorting and not flu
The soreness, fever
, bleeding all indicate the nasal damage or even a perforation (breakdown) of the nostril/ septum of the nose)
It can get serious and life threatening.
You need urgent medical attention and treatment.
Stop cocaine !!
Take care and please keep me informed of your progress.
I hope to have answered your query satisfactorily.