guys, i have had a persistant cough for about 5 months now and the doctors have checked me for asthma and other things nothing seems to show up. I have cycled t-3 in the past about 3 times. Do you think that it is possible that i have screwed my thyroid up? I just constantly feel the need to clear my throat i also cant seem to get any air into my lungs. does this sound like some symptoms of improper t-3 usage?