I am a 27 year old female, who had half of my thyroid taken out 8 months ago. The last time I had my thyroid tested was 6 months ago, which came back as normal (it was 1.20). Here is the problem, i'm still losing my hair, i'm constantly tired, I can't seem to lose any weight, i'm extremely moody. I am going back to the dr today, but I had all these symptoms before & my thyroid was normal, so what do I do? What else could be causing these problems?? Any response would be great.