In The Past Year, I Have Started Breathing Loudly. My

In the past year, I have started breathing loudly. My children complain and leave the room. I feel like I am short of breath periodically and have to take a deep breath. I have to a pulmonologist last year and he gave me a test that I passed and also took scans and x-rays. He said I was OK. I had an allergist perform allergy tests and there were no positives. What can I do? I am pretty depressed now. I don't sleep well because I wake up short of breath. I had sinus surgery to help but id did nothing except to put me deep in debt. Thanks,
Gene