Cough and then cant breathe...gasp for breath

i lost my breathe about a week ago , (felt like i was all congested and couldnt talk, i have since gotten my voice back mostly but still cough a little... when i do cough i lose my breath for a second and cant breathe in... i gasp but then can breathe... sometimes its a second sometimes a few seconds... what is that? what can i take? it only happens when i cough i sleep fine ...please help