My wife was diagnised as hypothyroid several years ago, although she had no antibodies. She started taking 75 MCG of Synthroid, and has been taking it ever since. Despite irregular periods, she was able to get pregnant and he had a healthy baby (she continued the synthroid thruogh pregnancy and her levels were normal).
However, 14 months after the baby was born she is exhibiting many sympoms of HYPERthyroidism -- sleeplessness, weight loss, and significant anxiety. She hasn't had her thyroid levels checked since the baby was born and is still taking the 75 MCG of Synthroid. Is it possible that she is taking too high a dose?