H, i am underactive but possibly now slightly overactive due to the last blood test being higher than normal so have dropped 25 mg unlike you I love the cold, I cannot tolerate the heat that well at the moment so continually sticky, I am menopausal but have had the mirena coil in for the past year, not on hrt have suffered night sweats but just lately they are worse so could be a bit of both, the moood swings are the worst one minute fine the next minute its completely changed, would love to feel normal again. Decorator have you been referred to a specialist i'm sure he would be more sympathetic to your condition, I am seeing a specialist this evening because I have a digestive problem he said it could be a result of taking to higher a dose, who knows.