A.E.
Hi Melissa,
I was diagnosed with hypothyroidism when I was in 8th grade. I was sleeping all the time, cold, and losing hair. I did not gain weight as a matter of fact I was underweight when they dx me. I started taking Synthroid then and have been on it for 19 years. I would recommend you going to see an endocrinologist if you primary doctor can't dx it. I went to see one after the birth of both of my children because my thyroid got out wack a little with each child. The synthroid has made a world of difference for me. I am no longer tired and my hair does not fall out as much. Unfortunately I am still always cold! Good luck!