What's happening? (please help!)?

You may not have an ear infection. Sinus and allergy symptoms like you describe can cause the eustachian tubes in the middle ear behind the eardrum to swell and clog up and then it retains fluid behind the eardrum. That can cause hearing reduction/loss, pain, discomfort, throbbing, dizziness and more. People often describe it as feeling like the ear is under water due to the odd pressure and hearing loss. You can often even feel the fluid sloshing in there when you lie down or lean your head over. You might hear weird noises in your head like clicks or whooshing. This often clears on it's own in a few days or weeks, but if it does not, I have come up with a home remedy that can clear the clogged middle ear from the inside. No one else know how to do this. Even Doctors. Visit Earadicator.com if you'd like to learn more about the remedy for clogged ears due to sinus and allergy and colds.