Disc disease symptoms and conditions

Ive been on synthroid since Saturday august 23rd and I noticed Im more nervous like I want to climb the walls and im sweating profusly. I have lost over 100 lbs since February and I had blood work done on tues august 19th and the doctor put me on 25 mg. Im suppose to go back in 6 weeks and get my level checked again but Im going to call the doctors office tomorrow and tell them what is happening. If this is what is going to happen Im not staying on it. Im only 42 and I am battling deg.disc disease which hurts enough and sciatia.