Can Atrial Fibrillation Cause Difficulty Of Getting The Breath Back After Sneezing?

The last 3 times I sneezed I had great difficulty getting my breath back - I just could not breath. Quite frightening. I knew the myth of heart stopping when ones sneezes - but not true. I have atrial defibulation and therefore have had breathing problems. I take beta bloc tablets, digoxin and warfarin. I have been told I have a lazy throat muscle.