Ok, so I’m vaxxed, boosted and had the original strain a year ago. I started to need to clear my throat a lot late last week. Felt some drainage in my throat and have been hacking out some clumps of mucous the size of quarter. No fever, no sore throat, no body aches, my head feels like a balloon. The crud has been coming up pretty easy the last 2 days and seems to be better tonight. Not even a runny nose, all post nasal. Sinus infection..right?