I have a really bad cough, whats wrong with me?

ok so i was at a music festival on sunday 26th june, and for a whole hour a women in front of me smoked, so i kept coughing, but on monday it got bad, i would wake up in night with a bad cough, and tuesday it got very bad, my class were practicing a song, and i started to cough, i couldn't stop i could bearly breath it felt like someone was tickling my throat and it really heart my lungs and stomach, and now every time i want to cough nothing comes out so it sounds like im fake coughing when i really not, and when i do cough sometimes i cant breath and cant talk because when i cough im trying to get air in but it not working so i keep coughing and it really hurts my lower ribs and stomach, and sometimes when i cough this mucas stuff comes up its horrible, please answer if u know anything about it