I had some lymph node swelling a few weeks back which was attribute first to a bug (my entire family was ill at the time) and then possibly to allergies. My doc did allow for the possibility that it was reflux related, as my taste buds were visible in the back of my throat. Then again, I've also been dealing with costocontritis off and on for the past three months and that brings with it swelling of the rib cage and that whole muscle group, which might also be responsible.
Typically the swelling goes away in a few days at most - usually a few hours. Still under a great deal of stress and have some anxiety as well, so it's hard to really say.
I'm undergoing an endoscopy and dilation procedure in a few weeks. Hopefully it'll come back normal.