So here's something I learned about yoga...
There is a yoga pose called Karnapidasana which can supposedly cure ear pain and pressure gradually over time. The term derives from "Karna" meaning ear and "Pida" which means pain, discomfort, or pressure.
So... who knows? Give it a try... if you can physically do it safely.
DISCLAIMER: Not recommended for those who are not flexible. Also, not something I personally recommend to treat ear pain and pressure.