I Have Excessive Mucus (just Had A Tube Down My

I have excessive mucus (just had a tube down my throat to "clip" my lung to see if I had cancer or not). the doctor had a difficult time seeing because of the excessive amount of mucus. Here is my question: I seem to constantly have panic breathing attacks. Is this a result of too much mucus? How do I control these attacks? they can come on anytime I'm standing, bending or walking. When I'm sitting or laying down - every things fine.