Almost 5 weeks ago I picked up a chest cold (I don't usually get colds) and now, almost 5 weeks later, I still have it with lots of coughing and also what appears to be an infection in my left ear my whole left side is sore (I'm almost deaf in this ear). I'm somewhat concerned, is this part and parcel of having a overactive thyroid? I thought I had gotten rid of it and then, last Saturday, it came back with a vengeance. I'm 'sick of being sick' coupled with this I feel the cold more than ever before (its winter at present). Any help would be much appreciated.