Look at the threads that WG (and I) have contributed to....
It is a tough one right enough....the good news for you (IMHO) is that there probably isn't anything structural wrong with your tubes...you've just had the misfortune to get some liquid stuck up there that won't clear.
I reckon (non medical opinion but somebody who has suffered as you are suffering) you should try getting some steam up your nose......get your head over a bowl of hot water with eucalyptus oil and steam a couple of times a day. Saline wash is a good idea too....take a look at the NEILMED site...they sell bottles that you can use to blast some saline solution up there to wash past the opening of the ET and clean out any crap there. I looked at Loose Rivets' posts and I have spent a lot of time trying to do what he suggests but so far have only managed to spray salty water over the bathroom and myself! It is good advice though if you can make it work!
Try to keep hydrated too....it helps thin the mucous and may help it drain.
Excercise may help too I reckon...if you do it hard it can open up your passageways and get some air around there...
I sympathise....if you need anything PM me...