What Causes Fatigue Along With Shortness Of Breath?

Suddenly extremelly fatigued, short of breath, especially in the morning. Had a chest cold some 3 weeks before. Got X ray, full blood test, 2 urine tests, the first with traces of blood, a micro urine test followed and showed no blood. ECG. 2 days ago had a CT scan (no results yet). Examined by family Dr some 3 times and respirologist once. On inhaler now but it doesn t help. This was a sudden change. I have never been like that before. Y am a little overweight (210 lb 6 ft), not sedentary at all, very active and in general in very good health. I had bladder cancer 8 years ago. It resolved quickly (BCG) but I continue with cystoscopy once a year, as a precaution and at my request. I think I am a little over-anxious these days. It s not retirement sindrome as I have been retired for 13 years. I have many many interest and usually short of time for all commitments. So, I am puzzled as to what my problem may be as no one seems to know. I have quite a few Drs in my circle of friends-and as many opinions-but none seems to guess correctly. My respirologist will see me again tomorrow.