Trouble breathing for an entire year

This started end of last February.. ironically, three weeks after I changed my diet to gain weight from an eating disorder I had...I've had multiple chest X-rays and CT scan of chest showing nothing... basically it feels like a constant pressure squeeze in my throat...where base/back of my tongue meets my throat..feels like my airway there is constricted...it is constant..24/7 and it disrupts my sleep heavily..constantly waking up...always tired..also have head pressure because of the throat squeeze...my tongue feels heavy and weird...talking is difficult..swallowing takes more effort...sleep is a nightmare...as in i am waking up constantly...if I try to take a nap during the day, I simply cant..heart rate goes up....and yes..jus feel like I'm breathing through a straw all day everyday...I went to an ENT yesterday and they did nasoendoscopy.. Saw nothing in my nasal cavity or nasopharynx (even tho I thought maybe my adenoids were swollen as I feel pressure back there ) ...just said I have signs of LPR... inflammation and swelling in my throat and have major tongue thrush...said I need to see the gastro doc...

I cannot live like this anymore!! It's disrupted every aspect of my life and made me depressed....anyone else experienced anything like this?