Flight Cabin Pressure

I have just completed a 2-days 1-night training in Alor Setar. About 2 weeks ago I felt feverish but no fever. Then I felt fine till last 2 days that I had to conduct my training despite the fever and flu. It was the kind of fever where I still have appetite to eat and no headache and dizziness so thank God for small miracles I managed to handle the training till it ends. What makes it worse is the aircond and there's nothing I can do about it.

On the flight return last night, Boeing 737-400, I prepared myself for the cabin pressure by buying some chewing gum. With the flu and stuffed nose, I need all the help I can get to handle the ear pressure during landing time. So by the time the plane started to descend, I started chewing the gum vigorously. I felt OK but I still heard some movement of air pressure in my ear drum at the different levels as we descend. I chew, chew and chew and then there's an excruciating pressure in my left ear. The pain felt so sharp until I felt as if I was having a tooth pain and I can't even chew the gum with my left molar because my gum feels tender. Is it possible to have such pressure till it felt as if your tooth is being extracted? I pressed both ears with my fingers trying to ease the pain. Not just my ear drums but my sinus bones and head also felt like bursting. That was the worst ear pressure I've ever felt during landing time.

Then I felt partly deaf as I can only hear with my right ears till I went to bed last night. Thank God I can hear fine this morning. The only thing is when I blow my nose, I felt pressure again in my left ear. I can handle turbulent flight, I can handle air pocket, I felt no fear whatsoever of flying but I'm developing fear of the landing time. Aaarrrggghhhhh...... save my head! Save my head! It's about to burst!