a thyroid goiter with nodules?

i have a goiter with nodules. my tsh always comes back in normal range. for 2 years my doc says watch it. i am tired all the time. my weight goes up and down. i have palpitaions sometimes, my hair is falling out. i hardley sleep which is strange to me seeing as i am always tired. i am achy alot. my new doc has referred me to an endochrinologist. i go the 23. i am just wondering what to expect. i have my bloodwork to take and a copy of my ultrasound, which showed that in the last year, the fluid nodules i had, one turned solid. i am very worried.