I had endoscopic sinus surgery in early Aug after few years of chronic sinus issues. My R side of my sinuses has no real issues. The L side and the side (the worst side) has pressure, popping, congestion, post nasal drip and NO drainage out of my nostril. I can blow nothing out of my left nostril, only option is to keep swallowing post nasal drip which is annoying to say the least. I have had total of 3 follow up appts. what can i do to relieve these chronic issues and fast? thanks