I got hit by a ball 2 months after septoplasty

Sorry to read of this injury. Septoplasty involves an operation targeted at changing the internal framework of the nose without changing one's external appearance. Did you have septoplasty or septorhinoplasty (septoplasty with an external change to the nose)?.  Regardless, when on is hit in the nose and bleeds, it is possible to have a nasal fracture with widening and/or deviation. This may be a permanent change and I would recommend you get evaluated by your surgeon to see what has happened. Hopefully, it is all just swelling - but without an examination, it is impossible to say for sure. Best of luck from NYC!