Excessive tiredness, backaches,

I am young 25 yr old male. I was having problems with inability to concentrate,slow Thinking, memory loss, headaches,backaches, sleepiness, neckaches,for long .The tiredness suddenly reached peak in the last few days ,where i was not able to get up from bed to do anything,and my whole back ,neck,and body was aching. I was not able to find out cause. Then i checked my TSH it came out to be 13.7. Now i have started treatment for it with thyronorm 25. Now also i am experiencing extreme tiredness, backaches,neckaches, heaviness in head . I want to know is this all thyroid related or is it depression symptom? I was feeling low some days in the evening. Anything that will help me with fatigue. How long will it take for effects of thyronorm to come?