Woke up with left ear clogged. No cold or runny nose. Took allergy pill but no relief. No pain in ear. Just feel pressure and clogged.?

Eustachian tube. Hello, your ear symptoms are due to a eustachian tube dysfunction. The lining in your nose continues into the eustachian tube. Any condition affecting your nose will in turn cause ear symptoms. I would recommend afrin nasal spray as directed for 5 days. An otc decongestant can be used as directed thereafter for 7-10 days. If the symptoms persist, then see your ent.