I'm seriously seeking answers regarding my mom. She is 70 years old, has severe shortness of breath with something as simple as taking a shower, takes her 15-20 min to get her breath back, she keeps a heaviness/pressure in her chest, and has uncontrolled blood pressure, with a history of TIA's. In the process of changing bp meds to try to get control, EKG shows normal and stress test from 8 months ago was normal. Symptoms are not getting better but maybe even worse. Could there be something they are missing?