acid reflux , hital hernia , gastritis

Had a few questions about my symptoms, I've had acid refulx since  i was 17 now im 27, never really took it serious till it started affecting my breathing.. then started having digestive issues with it like burning at first then severe stomach pain from taking antibiotics it rip my stomach to pieces, everything i ate i felt so much pain no matter what it was... i don't have H pylori. i was diagnosed with acid reflux gastritis and hital hernia.. i was told the hernia wasn't big enough to affect my breathing... my left lung feels affected and that's where i have had the acid pain mostly.. i cant catch my breath most of the time and its scary i cant even be that active. in the past i worked in a place where there was a lot of second hand smoke not sure if that might have done damage. i do not smoke.. i just hope that i can fix these issues, doctors look at me and think that i perfectly healthy but i feel terrible,  trying to find a way to fixed the underlying cause which is hard to find a good doctor that actually cares.. if i can get any advice on this i would really appreciate it.. thanx