feeling so sick, miserable and tired :(

I talked to a nurse at my Endocrinologist office on wednesday- shes said my thyroid was off and i was showing signs of insulin resistance. 
I seems as if after that phone call I started feeling physically alot worse. Dont know if its because now there is an explaination for the way I feel--- so now I can give in and just feel and try to take care of myself... dont know! 
It seems like every morning I wake up more tired, more achy, more nauseous. 
My body hurts in every way- its an exhausted achy feeling. I feel hot to the touch almost fevery but my temp is slightly low. 
weird... my teeth also feel very sensitive...
maybe i am coming down with a cold also. ???? I've already been sick twice in the past 6 months...
I do yoga very often- hot yoga to be specific and usually the heat makes me very flexible and relaxed- yesterday i could barely move- it kind of scared me!
ugh i dont know what this is all from--