The bleeding from the nose may be because of many reasons.
You got hurt on your head, the excessive sneezing
, infection in the nose-rhinitis
, excessive cough & Sinusitis
all are the probable causes.
Now, when the bleeding is stopped, if it reappears you have to go for investigations to find out the cause.
Treat your throat infection
, cough & cold properly as per your qualified Family Physician and you won't have any trouble.