The recreational drug issue was in my past. I was just trying to highlight a possible cause of my current condition.
As for the painkillers - well the doctor advised I used them.
A quick update on how things are going then. I am having some minor nose bleeds and my symptoms seem to be diminishing in a slow manner. Whilst flu like symptoms are still present, now I am getting a crackling in the side of my head. So i think whatever this bacteria/fungal infection is, its definitely not liking these anti-biotics.