Pain and pressure behind the eyes is a symptom of TED. Whether you have it or not, I couldn’t say. The hyperthyroidism can also effect the eyes. My eyes are the worse when I am hyper and get mostly better when I am not. You don’t have to have bulging to have TED and you don’t have to have bulging to have compression on your optic nerve.
I have a rather minimal bulging in my left eye and no lid retraction. I do have eye muscle involvement and in the past have had swollen eyelids and lots of pressure. I was told by one doctor that I didn’t have TED and another one just sort of took my word for it because he said I had obviously done a lot of reading. In other words, you need an eye doctor who actually knows something about TED don’t just assume that they all do. They don’t.