I don't know what is going with my body

Ok I'm 22 and for the past year and half have been having neck and shoulder pain it's very uncomfortable and very painful and no mtter what I do if it's icy hot, heating pad ibuprofen etc. Nothing seems to be helping... and no doctors can tell me what is. They tell me it's fibromyalgia but can't diagnose it as that.

And also through out my whole life since I was 2 weeks old I was diagnosed with hypothyroidism , I actually have No thyroid and have been taking synthroid my whole life. I've been reading a lot of stuff about fibromyalgia and all the symptoms of it I seem to have. I get terrible migraines, my body is so stiff in the morning that I have to lay in bed and force myself to get up cuz I have a 3yr old. I feel so sluggish and so disoriented that I feel retarded (sorry) and i feel like a hypochondriac!

But I just recently went to my endocrinologist and my thyroid levels are in the "normal range" ...CAN SOMEONE PLEASE TELL ME OR GIVE ME ADVICE I CANT TAKE THE PAIN ANYMORE!