Suggest Remedy For Pain And Blockage In Ear

i'm 15 and my first afterschool jo interveiw is at nine am. its 2 am, and i have a clogged ear, which may or may not be infeccted. its so painful, i cant turn my head anymore, and i cant hear anything? please, i need instant relief fast. can somone help me? i dont own a styrnge and i dont know what to do!