Heart palpitations and anxiety are just par for the course with hyperthyroid. Sorry to hear you have them, they're miserable! But realize they're not caused by your thoughts or emotions, they're caused by your thyroid putting you into "flight or fight mode". Also it isn't unusual to have a really bad temper. So that is something to keep in mind if you're around other people. Take yourself out of any stressful situations until you can get under control. I'm sure I probably damaged some relationships while I was hyperthyroid just because I was acting so strangely. Try to avoid stress as much as possible.