Hi, I was diagnosed with Hashimotos when I was 17 years old. I am now 32. Levels have never stabilsed, as a result my thyroid function is always getting tested every 6-8 weeks. I take 150mcg levo and my symptoms are all a mishmash to be honest - dry skin, constipation, fatigue, joint pain, feeling cold but sweaty, weight gain. No idea if over or under medicated. I felt better on T3 but my current endo has taken this away. GP insists my results are normal.