Excessive Yawning/Shortness of Breath

I had an open lung biopsy earlier this year due to shortness of breath/abnormal PFT/abnormal CT scans.  In the end, they found chronic inflammation, scarring, and undifferentiated connective tissue disease based on tests showing "very strong" for lupus (though a diagnostic criteria short).  Anyway, I had been having shortness of breath since July of last year.  I have been experiencing a lot of yawning and I can't remember whether it started before surgery or after, but I know it is recent within the last year.  I feel like I'm doing it to get a good breath, which I have a hard time doing.  Today my boss told me I need to stop yawning so much.  I feel like I can't help it.  It doesn't matter if I'm tired or not.  I still yawn and also just general take sighful large breaths as well.  Has anyone else ever had this?  Could it be because of my shortness of breath?  Or a result of the surgery?