Clogged nose/deviated septum/ related to ear problems??

I am 16 years old. I have noticed that for the past few years I have been breathing through only one nostril at a time and the other one is clogged.  This alternates from time to time.  I have also noticed a clicking noise in the ear on the side that the nose is clogged.  This also alternates sides.  I have noticed that my nose is slightly crooked and this was confirmed when an ENT told me that I have a deviated septum on the right side, but he just told me to use an antihistamine nasal spray and an allergy pill: Clarasil D. These medicines have had little effect. I also hear noises in my ears when I swallow.  I hear a click/snap kind of noise, sometimes only in one ear and sometimes in both, when I swallow.  I also hear this noise when I yawn. I also hear a high-pitched ringing in my right ear when I yawn.  This ringing noise in my right ear never goes away, but it gets worse when I become more congested.  I think it never goes away because I can never really breathe out of both nostrils.  For the past two years, I have at times heard a crackling noise when I hear loud music, say something a bit loud, when someone else shouts something, when I am at a party with loud music, when I practice my clarinet or saxophone, etc.  This noise only occurs when I am having difficulty breathing out of both nostrils, which is almost all the time.  On very rare days, I can breathe fine for a while and then I do not hear the clicking noises in my ears when swallowing, or the crackling noise when listening to loud noises.  Actually I only hear a crackling noise in my left ear during a loud sound.  In my right ear I will sometimes hear a thump after I hear a noise.  This thump can sometimes be heard just from clicking my mouse repeatedly in the same rhythm, but usually requires a louder noise.  Recently everything has worsened.  I recently had sinusitis which involved a lot of pain around my nose, in my cheeks, in my throat, and in my right ear.  The pain did not go away without antibiotics. That was about a week ago.  During that time, the ringing in my right ear was much louder and I was hearing two different high-pitched sounds.  The antihistamine and allergy pill have had little effect and I have been taking them for a long time. I notice that if I pull down on the middle of my ear, near the whole, and let go I hear a whooshing sound.  This is true for both ears. My ears feel full and itchy at times.  When I push down on the place near my ear whole I hear a sound like rice-crispies cereal popping in milk.  This sound goes away after about 5 seconds.  Lately I have been tasting a weird taste in my mouth and at times a swallow a lot of mucus. I can feel it going down my throat.  Sometimes, recently, all of a sudden, a whole lot of, sometimes thick sometimes liquidy, mucus will just come pouring out of my nose.  I often feel like there is pressure on my nose and I cannot breathe out of one side at a time, and although that nostril is dry inside I feel that there is a lot of mucus trying to push into my nose, but it can't get in.  I also can hear this when I try to blow my nose, but nothing will come out of the clogged side! My question is this: What is the cause of these symptoms and is the nose causing the ear problems?