Coughing

Coughing....it never ends. I've been sick for over two weeks and had this dreadful cough for over half of the time. Just when I think it's gone I get up to do something and BAM....the cough is back. I cough and cough and cough until I can't breathe. I cough so much my stomach and chest hurt. I just want it to go away for good. Will it ever end?