What To Do For Discomfort In Swallowing And Breathlessness?

I am a 50 year old male. Have suffered with acid reflux for a long time(years). I have difficulty swallowing. I seem to get food caught in my esophagus. I get pain DIRECTLY under my sternum. I have to force vomit (2 fingers) to prevent choking. Vomit is brown liquid with chunks. Sometimes I have difficulty breathing (seems like food is backed up and blocking my airway). I get a very bad taste in the back of my throat. I have never smoked and I do not do drugs. My diet is mostly meat, dairy,bread,pasta,soft drinks, some water. I do not drink alcohol.