You should call your doctor (perhaps the first one who found your nodule?) and find out which thyroid tests they ran and what the results were. Often, they only run TSH, and that's subject to range problems as I mentioned above. If you have nodules, it could indicate that you have Hashi's (most of us with Hashi's have nodules). If you find out what's already been done, we can make suggestions on where to go from here.
I'm sorry the ENT was such a jerk. However, if you do have a thyroid disorder, he wouldn't be the one to treat you anyway. ENTs only do surgery and biopsies, then you have to find a doctor to manage ongoing care.
He said my "levels were elevated". That is all he told me about the blood test. I was to afraid to ask anything. He rushed through the visit. I waited a total of two hours there. : (
No, your doctor wasn't overreacting. Any nodule over 1 cm is usually biopsied. Without an FNA, there's no way the ENT could tell for sure if the nodule was benign or not. However, he probably did get some very good clues from the U/S.
What other thyroid test did you have? If you have FT3, FT4 and TSH, please post with reference ranges (they vary lab to lab). Many times doctors use obsolete reference ranges or test inadequately, and say things like "there's no way your thyroid could be causing the fatigue". We'll help you interpret them, if you post them.