My ear has been clogged for months now. I have chronic allergies, and every time I tilt my head to the right, my left ear clicks. I need the mucus out?

ETD - see doc. The sensation of ears clogging, clicking and popping usually mean the eustachian tubes are not working well. Normally they equalize pressure in the middle ear and prevent fluid from accumulating. Swelling from infection (virus) or allergy can prevent normal function. Warning: this can last for weeks/months. Valsalva maneuver (blowing while pinching nose), sudafed, nasal sprays + prednisone help.