I'm 16 and have pleurisy and i have a hard time breathing as to be expected but i was very dizzy yesterday and i use an inhaler to help me breath. i am concerned with my health i almost passed out on the stair today and the cough syrup and antibiotics are

You need follow-up: For these symptoms that are severe, you need to talk to your doctor. It sounds like your therapy is barely adequate and a follow up appointment seems like a very good idea. I would call now and let the doctor know about this. It's possible you need different or stronger medications. With dizziness/passing out, I don't take any chances. Would go to an ER if you can't be seen today by the doc.