Is there anything that I can do about coughing after eating?

[JetBoston]

I have asthma, acid reflux, chronic sinusitis, and a deviated septum. Over the past 2 years I've been having worsening issues with coughing after eating. I feel like I have a lot of post nasal drip and heartburn as well. I often cough up clear mucus until I vomit especially if I eat heavy meals which I try to avoid. Pasta seems to be a major trigger. I take medicines for all of my health issues. I keep a dry tickling cough during the day also. I've tried several times with my doctors but nothing has helped so far. Any thoughts? Thank you!