10 days / recurrence / pus - all these are an indication for investigation / A proper treatment requires a proper diagnosis - which is not feasible at this stage, without investigation
You need an X-ray of the chest and sinuses
/ blood counts / sputum culture
and so on - your doctor will advice.
No need to worry - an emergency is less likely / even in such a case, a phone call is all that is required - help arrives in minutes...
Relax / be reassured / visit your doctor again
Get well soon