Thank you for your question.
It sounds that you are still early in your recovery (2 weeks post op, correct?). It is normal to have a diminished sense of smell during this time, and should return with time. Low pressure saline rinses or neti pot irrigations are helpful in recovery after nasal surgery. I like to have my patients performing then almost right away. Check with your surgeon to be sure, but most likely these will only help your recovery. Headaches are more difficult to assess as there are multiple factors involved. It may be related to pressure in the nose and sinuses. It would be best to address this topic with your surgeon. Finally, the question in your title: did I really need nasal surgery? Cannot be answered by the photos above. There are many factors that contribute to nasal airway obstruction. Hopefully, this inforation helps.