Hi, mojorisin --
I can't tell you what your symptoms mean, but as someone who is guilty of getting all worked up over symptoms entirely too much herself, I can give you some practical advice! Stop googling symptoms for now. It's only feeding your anxiety.
You're already pursuing a course of action by seeing your doctor, and hopefully you'll get some answers soon that will set your mind at ease. In the meantime, here are some things to consider: aging is a risk factor for esophageal cancer, and you're only 27. Difficulty swallowing and stomach pain are both symptoms that could indicate any number of other conditions that are treatable, including acid reflux.
My doctor always tells me when I work myself up into a state of anxiety, "Quit looking for zebras when you hear hoofbeats."
Hope you can get some peace of mind soon.