Yes, I get this feeling, too. From what I understand, its completely harmless. It's one of those feelings that go away if you don't pay attention to it. Apparently, it something to do with the muscles in your throat being tense.
On a similar note, I often get this feeling when I eat, or especially, drink that it has 'gone down the wrong tube'. Its very uncomfortable and worries me. I've never had it so often. Does anyone know what this is?