My main symptom of acid reflux is a burning feeling on the tongue and mouth. So, yes, it could be a sign of acid reflux. I also don't have coughing/regurgitation/nausea. Once in a blue moon I have heartburn, but generally not. An ENT can look further down your throat and see if he sees a sign of reflux, but it's not always a reliable indicator.
I suggest you assume it's acid reflux and do appropriate diet/lifestyle changes and see if that helps. If not, you should go to a gastroenterologist, or even the GP can recommend an antacid such as pepcid and you can try a low dose first and see if it helps. Even if you resolve the problem with changes/medication, assume it takes time for the burning feeling to heal.