I Have Been Experiencing Something For The Last Year That

I have been experiencing something for the last year that relates to my breathing. My body keeps trying to get breath without me actually trying to breath. It's almost like I have been holding my breath and it is my body's way of trying to get oxygen back in my lungs. I am not aware of holding my breath, although I suppose I could be doing that without realizing it. Any ideas on what this may be.