the issues your haveing with swallowing (if your still having them) is called "dysphagia". I have the exact same issues with swallowing, needing to take a drink.
http://en.wikipedia.org/wiki/Dysphagia
If you havent already, I would talk to another doctor and get a swallow study done at least, as dysphagia can cause very serious complications, like aspiration pneumonia, in some people.