How to Be Sure You Had a Broken Nose in the Past?

If your nose actually hit the ground when you fell, then it is possible that it could have been broken.  If you are not happy with the appearance of your nose, I would recommend seeing a facial plastic surgeon or plastic surgeon that is experienced in rhinoplasty surgery.  With an in person consultation, you would be able to discuss your concerns and see if you are a candidate for surgery.  

It sounds as though the septum and the nose could have been broken during the injury.  X-rays will not be of help at this time since it has been many years since the injury and any fracture lines will have disappeared.  A physical examination of both the internal and the external portion of the nose will document whether or not it has been fractured in the past.  Breathing is usually related to the fracture of the septum, also known as a deviated septum. The septum can be straightened and repaired during a septorhinoplasty procedure for both functional improvement and cosmetic purposes.