Air Hunger?

[rukkus187]

Hi my name is steve i am a 20 year old male, 145 pounds 5'9", for about 2 months i have felt like i could not finish breathes, and when i yawn, sometimes i cant finish it, like im not getting enough air to my lungs, and lately i have felt like i constantly need to to clear my throat (I was diagnosed with post nasal drip as a child) and have a lot of mucus, especially in the morning. I have been to the hospital and had, an EKG, a chest xray, and a chest cat scan.. and they say everything is normal in my lungs and heart.. and i am getting enough oxygen in my blood yet it still feels like im not they said i have anxiety and panic disorder, when i went to my primary care doctor he said the same thing thats when i started taking, Wellbutrin, citalopram, xanax for emergency panic attacks, and trazadone for sleeping.

well i dont have as many panic attacks since i started taking the meds.. BUT I STILL HAVE THIS AIR HUNGER basically all the time.. at times it doesnt bother me as much but its always there it feels like.

I would just like some idea of what else it could be if its not the panic disorder causing it..