Good morning @chlcrene1993– I'd like to ask you a few questions concerning your medial care, it you don't mind. What kind of doctor are you seeing for this? Are you able to cough up any mucus? Did the tests that you had in the ER show that you have liquid in your lungs or are they dry? You could ask your doctor for some additional pain relief but be careful, some pain medications can suppress breathing, which is the opposite of what you want. If you have scar tissue that could also be the cause of some of you breathing problems. I had pleurisy as a smoker years ago. There doesn't seem to be a direct cause relationship between smokers and pleurisy but smoking can exacerbate it.
Here's some information for you: https://www.medicalnewstoday.com/articles/158813.php