Went in for a routine hernia op under general last wed. Had a cold but was assured it was fine to operate. Cold seemed to go post operation and was recovering well but now have hideous headaches (pressure with vice like grip, no pain releivers help) and neon green nasal discharge from nose that SMELLS ( sorry if TMI). Smells weird, almost chemical. Am now convinced have contracted a weird flesh eating disease that is eating away at my sinuses. Or, more rationally, is this really bad sinusitis ( had sinus problems before but never with a headache of this severity). No temperature but feel a bit achey. HELP !