Hello I will try and be brief. This started back in May of 2014 when I was on vacation. I abruptly began to feel like it took more effort to breathe in and till this day, when I do it feels like the air is not going into my lungs and just overall does not feel comfortable/satisfying. Sometimes it is worse than other times. It is usually worse at night and when I lie perfectly flat on my back. I used to smoke about half a pack a day and drink about 2-3 times per week on and off and I have maintained that lifestyle for about 2 years. Since this condition started I have cut back significantly on the alcohol and the smoking. Oddly enough, when I drink it doesnt seem to bother me as much however. I am 27 years old and have never had any serious conditions and have generally been pretty healthy. Also, I feel like there is something stuck in my throat (specifically where my throat meets my upper chest area) everytime I swallow and recently has become worse when I eat. Sometimes both of these issues cause my heart rate to beat abnormally fast (around 120) but then later comes back to normal. I have had a chest x-ray, an ekg and a pft test performed so things like lung cancer, copd, and asthma are ruled out. I thought it was anxiety so I took a Xanax one day thinking it would help but if anything I felt worse (breathing wise). Some people have told me it could be acid reflux but when I take things that are used to treat acid reflux such as omeprazole 20 mg I dont really feel like it does anything. Does anyone have any advice on what this could be or what tests I should have done? This feeling has caused me intense depression and my quality of life has diminished signficantly since it started. I wouldn't wish this on my worst enemy. Can someone please help?? Thanks!