Hello Sumit,
My daughter, Viola, 15 yrs, has had tonsillitis for a week, blocked nose, possibly sinusitis to some degree. Started antibiotics treatment five days ago. Co-amoxiclav. Three days ago, during two 1-hour flights, extreme pain. Yesterday, a 2-hour direct flight home. The landing was painful, but manageable.
Now, some 12 hours after the flight, more and more pain from the aerosinusitis. Stabbing, excruciating pain. Nose totally blocked.
--Michael