I Have Been Recovering From A Cold And Generally Feel

I have been recovering from a cold and generally feel well, but I do get bouts of severe coughing that seem uncontrollable. These tend to occur if there is a rapid temperature and/or humidity change (e.g., going outdoors). Sometimes it occurs after eating a meal. The cough becomes very severe and I feel shortness of breath. Additionally, I often vomit when this happens. Typically, it is primarily clear phlegm (or so it appears). There are usually food particles as well, but it is primarily a clear substance consistent. I often feel extreme nasal drip when this occurs. Often after vomiting once or twice, the cough subsides. Shortness of breath persists, but clears up quickly, within 3 or 4 minutes. Also, I notice (a curiousity) that my scalp becomes quite sweaty when these bouts occur. I would say this has happened about 3 times a week for the last 2 weeks.