I Had Bronchitis 5 Weeks Ago. I Have Been Feeling

I had bronchitis 5 weeks ago. I have been feeling pretty good til yesterday when I started having severe coughing jags. I had a little mucous but mostly a hard dry cough, which tires me out and leaves my chest hurting.My nose is clear and if I breath gently I don't have a problem. But when I try to do anything and breath through my mouth, I start coughing and can't stop until I sit down.