I Take Methimazole For Nodules On My Hyperthyroidism, However, I

I take methimazole for nodules on my hyperthyroidism, however, I am always cold, depressed, unable to loose weight and tired, could there need to be a change in the medication, I am also having panic attacks and problems working in new situations. I am 69 yrs old, and still work full time. Thank you