Could this possibly be sinus related?

Im new here and dont know WHERE to post this question so im shooting in the wind hoping someone may read this and be able to help me possibly! I just turned 34 this month, relativly healthy mom of two, i have recently began the battle of laying down the ciggs have had this habbit since i was about 13. Doing good so far with the help of an e cigg so theres a brief low down on me.Anyway my problems started about a year ago. I have had problems breathing,becoming dizzy, Head pressure like crazy, ear pain, throat feeling tight feeling as if something is draining in the back of my throat on the left side, CHest pain that is only on the left side and sometimes shoots through my back.. This has gradually came on over time with the breathing problem. It will get better then worse again back and forth. I began having extreme sensitivity to smells that trigger a scary reaction in me that effects my whole body such as with purfumes, air freshners laundry detergents etc. Been hospitilized several times, have had tests ran on my heart, lungs organs in my abdominal area have had a endescope, a pulmonary function test SO MANY TESTS they all come back good BUT i still have this breathing problem that wont go away. Im desperate, what other tests maybe could i ask to have done? Ive never had a ct scan of my head or had my sinuses checked. Could ALL this possibly be related to my sinuses? At times my breathing problem feels as if it is comming from my head (I know this sounds weird) I also have extreme fatigue *Sp and just generally feel like crap all the time. I also KEEP a heavy feeling in my chest and not sure if this is related or could be but have a LOT of pain in BOTH my hips that started around the same time my breathing problem started! I KNOW something is wrong, its ruining my life and i HOPE someone can tell me something that this possibly could be. Again, ive had a ultrasound done on my heart, ekg several other heart tests they come back fine, had chest x ray along with that dye test where they shoot dye in your lungs to look for a clot AND the pulmonary function test done ALL showed perfect. Had the arterial blood gases checked where they check the amount of oxygen in your blood, perfect.. I think im covering everything here altho i possibly could be leaving some things out. This has went on a while with many different symptoms but the main SCARY one is the breathing problem. WHen i lay down it seems to get better BUT who can lay down all the time?..lol.. Thanks ahead of time to anyone who may have taken the time to read this and offer me some advice. I appreciate it a LOT..