I am 38 and have been unwell off and on for a good while now. Feel better in summer but when the weather turns I always feel cold, even sitting around the house if I move to a cooler room I feel shivery. In summer when it was baking hot I remember wondering why I wasn't sweating? I am more tired these days. I have had some heart issues mainly it racing so have had a recent ecg. Dr suggested thyroid issues but the red herring was that he expected my heart rate to be slower as everything else indicates hypothyroidism. My resting hr is usually around 60 but at times shoots up to 100 ish. My ecg results were borderline I was told. I have never really been ill but this year had a really serious chest infection and at the moment am just about recovering after a horrible sinus and ear infection. I have gp appointment in the morning I am going to ask for blood test, can anyone share their experiences of symptoms before they were diagnosed please?