Hi, I Have AFIB. The Only Sympthom That I Seem

Hi, I have AFIB. The only sympthom that I seem to have with the AFIB seems to be a shortness of breath. Especially when I go up a flight of stairs and am carrying something. Different things that I seem to be doing is affecting the shortness of breath.For the last couple of weeks, I seem to be getting short of breath more frequently. For the last hour I seem to be just sitting here belching. Sometime yesterday I did the same thing. Just all of a sudden I was burping. (no gas expelling or funny taste in my mouth). Are the two things related it a sign of something??