... my hands and feet get uncomfortably red and sweaty (in the winter they got painfully purple and white and numb), even though they sweat now i they are very dry, the veins in my arms are pronounced (very new and uncomfortable), sometimes I feel my breathing is off, my stomach hurts and I have this overall unsettling feeling all over. Could it be the Levothyroxine 75mg? I am taking it because my T4 was slightly below normal. I am also taking vitamin D and calcium supplements. Please help... I am really scared of this overal feeling. I have presented my complaints to my doctor but I am to continue with the medicine.