I am on 50mg of levoxyl and my feet seem to be cold all the time,...

I am on 50mg of levoxyl and my feet seem to be cold all the time, i am still tired there are still days i feel so exhausted that i dont want to move.....I have been on and off it since about april of 04...Lately i feel like i am haveing problems breathing funny feelings in my neck........I feel stiff alot and nauseated lately....I know it taked awhile but i dont like feeling like this anymore i am not myself and i feel its hurting my marriage...29 and feel like i am 80....Please tell me if anyone feels this way....