Ears feel plugged/ clogged and sound amplified, especially when not lying down. feels this most of the day, but not all the time. what can that be?

..Look into the Ears: 56 y/o female Ears feel plugged/clogged and sound amplified, especially when not lying down. Feels this most of the day, but not all the time. What can that be? One first of all needs to see a real doctor, preferably the Ear/Nose & Throat Specialist who will actually Look into the ears to see if there are Physical obstruction, injury, infection ... & check out the hearing (Audiometry)... & treat..