I wouldn't exactly say that I get shortness of breath, but I do know I'm a shallow breather. I try to remember to stop and take some deep breaths, occasionally.
Oddly enough, it's worse in late winter/early Spring; almost like clockwork. My doctor thought I might have some type of allergy when I brought this up to him some years back. The topic of shallow breathing has been mentioned here on the forum, I believe.
I did a quick search and was surprised to see this is quite common in fibromyalgia:www.fibromyalgia-symptoms.org/fibromyalgia_breathing.html
Just another fibro "gift" I guess!
Pray, hope, and don't worry." St. Padre Pio