I hope everything goes well. I've got everything crossed for you.
Congrats on quitting smoking. I hope you stay that way. Trust me, your parents probably are already aware that there's something amiss. When you go to the ENT please don't go alone. Ear pain was my major symptom. They'll check out your ears as a matter of course. They found no redness, swelling or anything. Under normal circumstances that's a good thing; in my case it meant no infection, but was an indicator of tongue cancer. Is it possible that you've bitten or burnt it? Still, don't ignore it.
Let us know how it turns out.