This is now a complication of flu
with development of secondary infection. Th green pus indicates an infection which may need more than one antibiotic. A culture and sensitivity of such green discharge help sa lot in a long run.
You have to also instill decongestant nasal drops and take steam inhalations 4 times in a day. Take supplements as by this time the resistance power of the body is also reduced a lot. Take a bed rest
for early recovery, exertion causes delay in healing.
You may need to undergo CT scan
of the sinuses
if the medicines are not helping. You may please request your Doctor to give injectable Amicacin or Gentamicin
( effective against green pus).