I have a higher t3 at 116, t4 is 0.8, tsh is 2.44. diagnosed with hashimotos. have very bad palpitations and high heart rate and anxiety when it's like this. is there anything i can do? is it the t3 causing these symptoms?

While your T4 is low normal, your T3 and TSH are within normal range. Hashimoto's thyroiditis is an auto immune disease which creates a deficiency in thyroid hormone production. "Palpitations, rapid heart rate " are generally associated with anxiety and stress, but not specifically with Hashimoto's. Your endocrinologist will be able to correct insufficiencies in thyroid activity.