Am 19 year old patient for hyperthyroidism, almost a week I was very ill. My heartbeat is very high ,dizziness ,nervorous, general body weakness shivering sometimes, and chest pain. I went to see a doctor and he sent me to the lab for testing. Result had shown it and t3 shown 3.86 lab range is 1.3_3.1 and my tsh result was 6.96 and lab range is 0.3-4.2. So he prescribed for me 1_propranolol 2_euthyrox some doctors told me that euthyrox is used to treat hypothyroidism not hyper. Please help me to regain my help by giving me enough information.