I took dns with sinusitis surgery 6  months back i had mild antral gastritis and mild allergic asthma im feeling chest tightness and breathing difficulty in my chest area from 2 months (this tightness i used to have before dns surgery also sometimes)when i asked this to my ent doctor he said it might be gastric and no problem with dns surgery then i consulted gastroenterologist he gave me medicines for gastric he said it won't be due togastric then i used them for 3 days but no result after 10  days i felt good again now from past 3 days I'm feeling same i don't understand what to do i used  inhaler also it won't work when i have this  becoz of this I couldn't sleep during night time im  facing this tightness even day time also  to whom i should consult for chest tightness (breathing)is it ent gastro or pulmonologist