Ashley, Grave's Disease causes a hyperthyroid from my understanding. Hyperthyroid and hypothyroid are exact opposites. Mine is producing way too much hormone and yours isn't producing enough.
I have read that with both cases, meds are difficult to get adjusted correctly. If you are having problems sleeping and having hot flashes, then you may need a med decrease. (My heart rate is around 150 sitting down. I will be put on beta blockers, too. Maybe you could check your heart rate adn see what it is doing. Maybe if you need a med decrease your h/r will be really fast like mine is

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My doctors decided to hold off on my meds until Wednesday afternoon or Thursday. I have a nuclear scan Wednsday morning which should help them see my thyroid in action, thus have a better idea of my dosages. The thyroid med will be Tapesol (SP?) and I'm not sure which beta blocker I will be on. I will know more by the end of this week.
I have seen some really good articles on the web that go into detail about both diseases. When I have a few minutes this afternoon, I will share them with you!