Have had bronchitis for almost a month now. i have felt like i haven't been breathing deeply enough. have been dizzy most of the day. ?

Not good: It is time to seek medical care and to get those respiratory symptoms under better control. Take care.

Need evaluation: Given that this has been ongoing for a month, certainly warrants a medical exam by a physician. It could be bronchitis/pneumonia that needs antibiotics. You need a full evaluation done taking into account your chief complaint/social history/past medical history and a appropriate diagnosis and treatment based on the physical exam. See your family doctor where appropriate treatment could be started