Hi, it seems like you are doing all the right things for followup on this. Definitely have the biopsy…. It sounds bad but doesn’t really hurt. I was told that a biopsy is only as good as the area that the needle goes in however many cancers are predicted this way. In my opinion, you might want to ask if they can do Affirma testing if the biopsy is inconclusive. ( They do it at the same time as biopsy) From my understanding, this test checks the genetic makeup of the nodule and is supposed to be an excellent predictor for cancer.
Try not panic, it sounds like your doctors are checking things out without just assuming it’s cancer. No one wants to have surgery unnecessarily so the tests are good.
Just as an FYI- you can have some of your symptoms from acid reflux too, so try not to panic.
Good luck!