It doesn't really matter how much they talk about you really, I have much more respect for a doc that says, 'I don't understand this myself, but I will see what I can find out'. GPs are required to be 'jack-of-all-trades', so you can't really expect them to understand everything well, especially rare issues like this might be. So it's good that they don't just try to bluff it and hope you'll go away. My husband has complex medical issues after having septicaemia in 2005 and was on life support for a while with total organ failure. He saw his endocrinologist this morning (who is totally lovely, I hope you get someone like him) and even he said he wanted to further refer him to a 'super-consultant' with very specialist knowledge as he wanted a second opinion before making a decision. So delays can be frustrating, but it's always reassuring to know that they really want to get to the bottom of the nitty-gritty and not just get you out of the door.
Do I remember nosher saying he had sensations of anxiety before diagnosis too? Certainly when you go hypo, there are a cocktail of adrenal gland hormones that are produced to make you attend to it, so if you're perpetually rushing in and out of hypo and hyper states, it's no wonder this would leave you with a constant sensation of anxiety - you have had a shot of adrenalin each time.
I'm just getting my BG down from very high levels, since going on insulin and even at decent BG levels, when it's a bit lower than I'm used to, the first sensation I get is that butterflies in the tummy sensation of unease. It was a month before I figured out what it was and not an allergic reaction to the food I'd had.
I'm thrilled that you're feeling better, it's truly lovely to read.