Best Ways to Unblock Ears?

Hi,

after a recent flight my ears remain blocked. I've tried swallowing, yawning, and the nose pinching method and nothing seems to work. However, with the nose pinching I hear a squelch in my ear and then a reduction in my hearing and when I let go of my breath I feel disorientated, which is why I don't continue with it for long.

Any other useful methods would be useful, or I may have to see a doctor.