I have this wierd thing in my lungs? Anyone>?

So i got bronchitis about a week ago and went to urgent care where I was then perscribed an inhaler. I have been drinkin water everyday, mor ethan I usually do and trying to take care of myself. I use the inhaler twice every four hours. The thing is I still have this cough and now on my left side, on my back, where the back of my lung is< I get this bad pain when ever I cough. My Dad says is pnemonia, but non of the online symptpms seem to fit. I just think I am soar from the coughing. What do you "experts" think>?