Breathlessness is worse in morning on exertion is it due to lpr reflux cxr pft echo, ecg, tsh, cbp normal, m not overweight?

Could be: Could be. Also can be allergies or sleep apnea. Do you have scoliosis?

Doubt reflux: This could be some emotional reaction, also could be something idiosyncratic, i.e. A symptom you have which can't be explained in terms of conventional medical understanding. Some complementary approach, like homeopathy, acupuncture, or something similar might provide help even if conventionally everything seems perfectly normal. We are much more complicated than what we can measure with tools.