Hi, welcome to the forum.

I believe you have taken an important first step, which is to get an appointment with your dentist to look at the area. Like you said, it is possible that your doctor will refer you to an ENT to have it biopsied. Or, it may be nothing you need to worry about. Here we are just patients and caregivers who have gone through or are going through the treatment process. We are not medical professionals and do not have the training to diagnose (you wouldn't want us to do that anyway). I know it is worrying when something does not seem to be right but it would not help matters if you spend the next week or so worrying. Hang in there until you have your doctor's opinion. In the meantime, focus on the positives in your life and not the scary thoughts.