If this symptom appeared out of nowhere then I would suggest you see your ENT. Its always best to err on the side of caution when dealing with this. Since you only finished your treatments a few months ago you still should be seen by your ENT probably every month. Usually they see a patient every 2 weeks for a while then it moves to every 3 weeks then monthly, then every 6 weeks, etc.

You really can control the worrying. It takes lots of practice but it cant be done. First you must think positively about your situation. You are a survivor! Remember what you have been thru and try to make plans for the future. Good positive plans like a trip or outings with friends. Everybody needs a reason to get up in the mourning and something to look forward to. This will help take your mind off "what if". Cancer is a thief! If you allow it to, cancer will steal your time away from you. All you will accomplish is sitting around worrying instead of being out there living your life. Dont let cancer steal anymore time away from you! You dont want to be a victim sitting around feeling sorry for yourself being paralyzed by fear of the unknown. Worrying will never determine your fate. With practice you can "change the channel" in your way of thinking and you will feel so much better about your situation. I have faith in you that you can overcome this phase!