That's what happened to me when I first started getting really hypo/sick. I would get these horrible little rushes, kind of like I was driving and almost ran over a dog or something. It was adrenalin. At first they were sporadic, then it gradually became constant. I can't believe an endo dr. has never had patients decribe anything like that before. Maybe he's new.
Did you get a copy of your labs. I'll bet "normal values" on you tests aren't optimal #'s for you. From what I understand, the only way to check your levels properly is with Free T3 and Free T4, also tests for antibodies. Most people feel best if their TSH is about 1 and their T3 and T4 are at the higher end of normal. Don't let your dr. make you doubt yourself. It seems you have to be pushy to get good care these days. Good Luck, IWL