ive a hx of GERD with barrett's (on prilosic bid) and, recently had my thyroid removed 2 moths ago (benign multi-nodular toxic goiter). I'm slowly titrating up to proper dosing on synthroid but find I continue to suffer with a heaviness on my chest on inspiration, tiredness and low basal temp- about 97 daily. not sure which of my ailments to attribute this to- and just started on 100 synthroid- w/o much hoped for relief.... could there be another unrelated cause for the chest heaviness? pituitary? other?