Question: Question is, please, what now?

Within last year +, much difficulty breathing with even mild exertion -- as well as winded in normal conversation. Can't seem to get a full breath ever. (Please assume not anxiety.) Negatively effects nearly every moment of the day. Not over wt. Never smoker. Bkgd: Was active/athletic until in age 40's when mold exposure at work (office) led to diagnosis of asthma. Inhalers seemed to make things tolerable, but something changed in past year or so. Went to pulmonologist -- who I think is excellent. Did breathing tests. 'Pulmonary stress test now shows restrictive component as well as cardiac component to dyspnea'. Cardiac echo stress was ordered.An internist overseeing the test said he saw changes (from prior results?) but test sent to cardiologist came back:

(The test was stopped fairly as I was winded and had apparently reached a certain BP, is my understanding):


TREADMILL SUMMARY

Total time: 00:07:31 Resting BP: 124 / 80 Peak BP: 174 / 84
Maximum HR: 145 % age-predicted: 92 METS: 8.326
Reason for stop: XXXXXXX HR

EXERCISE SUMMARY
1. EKG response to exercise: No diagnostic changes. Much baseline artefact.
2. No angina or anginal equivalent.
3. Exercise capacity was average.
4. Normal heart rate response to exercise.
5. Hypertensive blood pressure response.
6. No arrhythmias were noted.
ECHOCARDIOGRAPHIC FINDINGS
RESTING:
Normal left ventricular function at all wall segments.
Normal chamber sizes.
No significant valvular abnormalities.

Ejection fraction at rest: 68%
POST EXERCISE:
Normal augmentation of contractility of all myocardial segments.
Ejection fraction at exercise: 78%
CONCLUSIONS:

Negative stress test with low likelihood of clinically significant ischemia by
clinical, electrocardiographic, and echocardiographic wall motion scoring
criteria.

Q: Situation needs improvement. What now? Thanks.