I have been using thyrorich 50 mcg for hypothyroidism since three years. I was diagnosed with diabetes four months ago i'm using reclimet 60+500 mg. I am suffering from shortness of breath while walking briskly and climbing steps since four months. I'm getting slight wet cough .my ecg shows sinus tachycardia, flattened t waves v4, v5,v6. My t3 is 1.16,t4 is 8.6,tsh is 4.04. Fasting glucose is 100 and post lunch is 116. My b 12 is 116. What could be the reason for my sinus tachycardia. I'm unable to sleep flat. I keep pillows under my head.