Google home remedies for ear ache. There is one of the remedies that talks about blowing the warm air of a hair dryer into your ear. The heat softens the goo and it helps it to get unclogged and draining.
Another remedy is to use a vibrator...any kind...and run it gently over the sinus areas and in front of the ears, behind the ears, over your head on your scalp, on your nose...all over anywhere there is a sinus or drainage tube.
This helps the goo that has solidified and gets it unstuck from the tubes.
The Sudafed should be helping this. If it's not then it might be something else going on. Sudafed gets moisture for the mucus membranes from your body. If you are even slightly dehydrated the Sudafed is drawing it's moisture "from" the mucus instead of add moisture to the mix.